Elementary School Math Olympiad Facebook Links
📘 Elementary School Math Olympiad Facebook Links – Updated on 26 Oct 2025
Explore Free Math Olympiad Primary Solutions by Jon — all learning resources and Facebook links are available on post here for easy access!
[Problems and Solutions links from 1 to 264]
List of Problems Link (please cut and paste this link and it will usually work):
Disclaimer: If anything I get to Solve in my free time I post it on my pages as it’s on my free time. I only don’t share which my students pay for which is my class materials or anything attempted during class hours, to be fair to those who attend paid lessons (this holds true for all my other pages too).
1) Problem 1 – Comparison Model Technique
https://www.facebook.com/100558941739209/posts/100562935072143/
2) Problem 2 – Which Lockers will be open in the end?
https://www.facebook.com/100558941739209/posts/100564711738632/
3) Problem 3 – Model Drawing Question
https://www.facebook.com/100558941739209/posts/101898514938585/
4) Problem 4 – LCM (Least Common Multiple) Trick Question
https://www.facebook.com/100558941739209/posts/101901901604913/
5) Problem 5 – Employing the Divisibility by 11 Shortcut
https://www.facebook.com/100558941739209/posts/101905964937840/
6) Problem 6 – Recurring Decimals Math Olympiad Question
https://www.facebook.com/100558941739209/posts/102697584858678/
7) Problem 7 – Find a 3 Digit Number
https://www.facebook.com/100558941739209/posts/106069091188194/
8) Problem 8 – Square Root Arithmetic – Attention to Details
https://www.facebook.com/100558941739209/posts/106105747851195/
9) Problem 9 – A Classic Basic Algebra Trick
https://www.facebook.com/100558941739209/posts/106613437800426/
10) Problem 10 – Increasing and Decreasing Rates Mixed
https://www.facebook.com/100558941739209/posts/107177321077371/
11) Problem 11 – Highest Power of 6 in a Factorial (Product)
https://www.facebook.com/100558941739209/posts/110068697454900/
12) Problem 12 – Additive Rates of Decrease
https://www.facebook.com/100558941739209/posts/112808837180886/
13) Problem 13 – A Fruity Question – How many Fruits of each type?
https://www.facebook.com/100558941739209/posts/115050100290093/
14) Problem 14 – Pages in a Book
https://www.facebook.com/100558941739209/posts/115801373548299/
15) Problem 15 – Unequal Rectangles with Equal Area
https://www.facebook.com/100558941739209/posts/116135693514867/
16) Problem 16 – IJMO Grade 5/6 – No. 28 – Geometry – A Classic Triangle Area Problem
https://www.facebook.com/100558941739209/posts/119233796538390/
17) Problem 17 – How Many Squares to Frame a Picture?
https://www.facebook.com/100558941739209/posts/120549006406869/
18) Problem 18 – Divisibility Trick – Finding the Missing Digits
https://www.facebook.com/100558941739209/posts/121519832976453/
19) Problem 19 – Pairwise Sums of Three Things Given – Model Drawing Trick
https://www.facebook.com/100558941739209/posts/122303432898093/
20) Problem 20 – Arithmetic with Digits
https://www.facebook.com/100558941739209/posts/123205956141174/
21) Problem 21 – A ‘Gigantic’ Cryptarithm or Alphametic
https://www.facebook.com/100558941739209/posts/123207466141023/
22) Problem 22 – Counting Problem
https://www.facebook.com/100558941739209/posts/123407389454364/
23) Problem 23 – Square Surrounded by a Rectangles Configuration
https://www.facebook.com/100558941739209/posts/123407852787651/
24) Problem 24 – What is the 2020th Digit that is Written?
https://www.facebook.com/100558941739209/posts/125746145887155/
25) Problem 25 – A Simple Adding a Zero Algebra Trick
https://www.facebook.com/100558941739209/posts/126157325846037/
26) Problem 26 – Algebra Substitution to Help see Better
https://www.facebook.com/100558941739209/posts/128612145600555/
27) Problem 27 – A Square in a Triangle
https://www.facebook.com/100558941739209/posts/128613068933796/
28) Problem 28 – Three Consecutive Odd Primes – is this Possible?
https://www.facebook.com/100558941739209/posts/129604388834664/
29) Problem 29 – Number of Edges and Faces in a Prism
https://www.facebook.com/100558941739209/posts/130028662125570/
30) Problem 30 – Equilateral Triangles forming a Maximum Perimeter Polygon
https://www.facebook.com/100558941739209/posts/130028962125540/
31) Problem 31 – Geometrical Construction Proof – MIMO 2017 – Upper Primary
https://www.facebook.com/100558941739209/posts/130036715458098/
32) Problem 32 – Money Same Amount Problem – MIMO 2017 – Upper Primary
https://www.facebook.com/100558941739209/posts/130039115457858/
33) Problem 33 – Palindrome Problem – PMONK 2018 – IMC 2013
https://www.facebook.com/100558941739209/posts/130042102124226/
34) Problem 34 – Five Questions No. 26 to No. 30 from Malaysian Mathematics Invitational Competition 2017 (Final Champions) – Year 6
https://www.facebook.com/100558941739209/posts/130044855457284/
35) Problem 35 – Picture Puzzle Example
https://www.facebook.com/100558941739209/posts/130046985457071/
36) Problem 36 – Number Puzzles – International Olympiad of Science No.13 n No. 39
https://www.facebook.com/100558941739209/posts/130049168790186/
37) Problem 37 – Cryptarithm – AB x CD is DDD
https://www.facebook.com/100558941739209/posts/130050658790037/
38) Problem 38 – How many numbers are divisible by 6 or 9
https://www.facebook.com/100558941739209/posts/130052738789829/
39) Problem 39 – Sum of Permutations of three digit number Sum of Permutations of three digit number
https://www.facebook.com/100558941739209/posts/130055452122891/
40) Problem 40 – Hexagon Lengths Sum given some edges and angles
https://www.facebook.com/100558941739209/posts/130057375456032/
41) Problem 41 – Number Puzzle in Circles
https://www.facebook.com/100558941739209/posts/130058312122605/
42) Problem 42 – Quadrilateral Area in a Quadrilateral
https://www.facebook.com/100558941739209/posts/130059705455799/
43) Problem 43 – Area of Triangle in a Shape
https://www.facebook.com/100558941739209/posts/130062102122226/
44) Problem 44 – Counting Maximum no. of intersections of circles and lines
https://www.facebook.com/100558941739209/posts/130063088788794/
45) Problem 45 – Two Ladders Leaning on a Wall Configuration
https://www.facebook.com/100558941739209/posts/130064158788687/
46) Problem 46 – Alphametic – Cryptarithm 3 x ABC is CCC
https://www.facebook.com/100558941739209/posts/130064972121939/
47) Problem 47 – Area of Triangle in a Multiple Mid-Point Definition Dilemma
https://www.facebook.com/100558941739209/posts/130066185455151/
48) Problem 48 – Three Algebra Trick Questions from KMC
https://www.facebook.com/100558941739209/posts/130067775454992/
49) Problem 49 – A Man and a Train Reaches Same Time Puzzle
https://www.facebook.com/100558941739209/posts/130069118788191/
50) Problem 50 – A Product of Consecutive Algebraic Fractions in Lowest Terms
https://www.facebook.com/100558941739209/posts/130070278788075/
51) Problem 51 – Digits for the Number 2^29
https://www.facebook.com/100558941739209/posts/130077518787351/
52) Problem 52 – Geometry Addition Reflection Trick
https://www.facebook.com/100558941739209/posts/130083492120087/
53) Problem 53 – Percentage Question 1
https://www.facebook.com/100558941739209/posts/130085288786574/
54) Problem 54 – Percentage Question 2
https://www.facebook.com/100558941739209/posts/130086258786477/
55) Problem 55 – A Relative Velocity Question
https://www.facebook.com/100558941739209/posts/130088275452942/
56) Problem 56 – Counting Line Segments – How Many Line Segments are Needed
https://www.facebook.com/100558941739209/posts/130089712119465/
57) Problem 57 – Age Dilemma Puzzle
https://www.facebook.com/100558941739209/posts/130090888786014/
58) Problem 58 – Alphametic or Cryptarithm Puzzle VCR + VCCT = SERVE
https://www.facebook.com/100558941739209/posts/130091615452608/
59) Problem 59 – Average Speed Problem
https://www.facebook.com/100558941739209/posts/130093492119087/
60) Problem 60 – Pigeon Hole Principle Problem
https://www.facebook.com/100558941739209/posts/130096798785423/
61) Problem 61 – A Multiple, Remainder and Divisibility Problem
https://www.facebook.com/100558941739209/posts/130098062118630/
62) Problem 62 – A Number and its digits Reversed – 4 Digits Problem
https://www.facebook.com/100558941739209/posts/130099338785169/
63) Problem 63 – Volume of Same Material Same Density Problem
https://www.facebook.com/100558941739209/posts/130100055451764/
64) Problem 64 – Combinatorics Counting Optimization Problem
https://www.facebook.com/100558941739209/posts/130100825451687/
65) Problem 65 – Exponential Tower
https://www.facebook.com/100558941739209/posts/131967971931639/
66) Problem 66 – Sum of Angles in a Star Shape
https://www.facebook.com/100558941739209/posts/132805665181203/
67) Problem 67 – A link between Pythagoras Theorem and the Cosine Rule
https://m.facebook.com/story.php?story_fbid=133122138482889&id=100558941739209
68) Problem 68 – Common Factors of Two Numbers
https://www.facebook.com/100558941739209/posts/133174535144316/
69) Problem 69 – Prism link between its edges and faces
https://www.facebook.com/100558941739209/posts/134107938384309/
70) Problem 70 – Trees decrease by 5% but increase by 600 each year determine after 10 years
https://www.facebook.com/100558941739209/posts/136527621475674/
71) Problem 71 – Number Base Consideration
https://m.facebook.com/story.php?story_fbid=137215964740173&id=100558941739209
72) Problem 72 – Pigeon Hole Principle with 30 Integers and Difference 10
https://www.facebook.com/100558941739209/posts/137782424683527/
73) Problem 73 – Five Brothers Share $100 where each get $5 more than the other Consecutively
https://www.facebook.com/100558941739209/posts/138418044619965/
74) Problem 74 – Areas within a Parallelogram Trick
https://www.facebook.com/100558941739209/posts/139267601201676/
75) Problem 75 – Percentage of substance in two solutions mixed to form a third
https://www.facebook.com/100558941739209/posts/139685287826574/
76) Problem 76 – Ratio and Percentage Mixed
https://www.facebook.com/100558941739209/posts/140240837771019/
77) Problem 77 – Factorize 9919
https://www.facebook.com/100558941739209/posts/141638710964565/
78) Problem 78 – Area of a Special Pentagon
https://www.facebook.com/100558941739209/posts/144037314058038/
79) Problem 79 – Linear Equation Constraint and find maximum for a2+b2
https://www.facebook.com/100558941739209/posts/149881373473632/
80) Problem 80 – Odd Terms Count in the first 100 Fibonacci Terms
https://www.facebook.com/100558941739209/posts/150995443362225/
81) Problem 81 – Coordinate and Square Placement Puzzle
https://www.facebook.com/100558941739209/posts/151013316693771/
82) Problem 82 – Circular Track 2 Cars distinct Constant Speeds Meet Again
https://www.facebook.com/100558941739209/posts/151241986670904/
83) Problem 83 – Maximum height in a Trajectory Function of a Ball
https://www.facebook.com/100558941739209/posts/151834639944972/
84) Problem 84 – Find largest of different two digit numbers if average is given
https://m.facebook.com/story.php?story_fbid=154328146362288&id=100558941739209
85) Problem 85 – Model Drawing for More than a Twice more Comparisons
https://m.facebook.com/story.php?story_fbid=155835756211527&id=100558941739209
86) Problem 86 – Model Drawing for spent a fraction plus something type cases
https://m.facebook.com/story.php?story_fbid=155837176211385&id=100558941739209
87) Problem 87 – Rectangle Split to Triangles and Area Considerations
https://www.facebook.com/100558941739209/posts/155838209544615/
88) Problem 88 – Largest Possible area of a Given Isosceles Triangle
https://m.facebook.com/story.php?story_fbid=155838792877890&id=100558941739209
89) Problem 89 – Basic Square Root Trick in Equations
https://m.facebook.com/story.php?story_fbid=155841212877648&id=100558941739209
90) Problem 90 – Rate Question asking Time involving 4 Persons work together to finish a Job
https://m.facebook.com/story.php?story_fbid=155841932877576&id=100558941739209
91) Problem 91 – Algebra Trick by Rewriting a Given Surd as Equation to Evaluate an Expression
https://m.facebook.com/story.php?story_fbid=155842326210870&id=100558941739209
92) Problem 92 – Finding Exponent with 2^n and 4^n
https://m.facebook.com/story.php?story_fbid=158394525955650&id=100558941739209
93) Problem 93 – Number of Revolutions in a Tractor Wheel of different sizes
https://m.facebook.com/story.php?story_fbid=158865189241917&id=100558941739209
94) Problem 94 – Model Drawing with Percentage and fewer than situation
https://www.facebook.com/100558941739209/posts/163507342111035/
95) Problem 95 – Square divided to rectangles of equal perimeters
https://www.facebook.com/100558941739209/posts/163508592110910/
96) Problem 96 – Subsequences Example
https://www.facebook.com/100558941739209/posts/163509598777476/
97) Problem 97 – Ratio of Speed and Distance link
https://www.facebook.com/100558941739209/posts/163510432110726/
98) Problem 98 – Model Drawing when Some Part is Given away
https://www.facebook.com/100558941739209/posts/163511498777286/
99) Problem 99 – Model Drawing if buy some free one type of Question
https://m.facebook.com/story.php?story_fbid=165958141865955&id=100558941739209
100) Problem 100 – Model Drawing each use the same number of beads
https://m.facebook.com/story.php?story_fbid=165960018532434&id=100558941739209
101) Problem 101 – Bookshelf Big Book Small Book Weight Type Problem
https://m.facebook.com/story.php?story_fbid=165962361865533&id=100558941739209
102) Problem 102 – Model Drawing for Buttons transfer and Ratio
https://m.facebook.com/story.php?story_fbid=165964101865359&id=100558941739209
103) Problem 103 – Model Drawing Sharing a Cost of a Present among three people
https://m.facebook.com/story.php?story_fbid=165965765198526&id=100558941739209
104) Problem 104 – Model Drawing to Solve a Simultaneous Equation Gold Award Problem
https://m.facebook.com/story.php?story_fbid=165967388531697&id=100558941739209
105) Problem 105 – Model Drawing in a Decrease and Percentage Scenario
https://m.facebook.com/story.php?story_fbid=165968738531562&id=100558941739209
106) Problem 106 – Two digit number and its digit relations given
https://m.facebook.com/story.php?story_fbid=165970738531362&id=100558941739209
107) Problem 107 – Pentagon Symmetry and Triangle Formulas
https://www.facebook.com/100558941739209/posts/182726153522487/
108) Problem 108 – How many pages in a book if 837 digits are used to label its pages?
https://m.facebook.com/story.php?story_fbid=184139950047774&id=100558941739209
109) Problem 109 – Comparison Model for 6 marbles removed and a third remains
https://www.facebook.com/100558941739209/posts/215385740256528/
110) Problem 110 – Nth Term for Sequence 12 11 9 6
https://www.facebook.com/100558941739209/posts/215728440222258/
111) Problem 111 – Inequality a’bc+b’ca+c’ab+2’c is at least 2’a+2’b
https://www.facebook.com/100558941739209/posts/222121612916274/
112) Problem 112 – Number a999b is divisible by 72
https://www.facebook.com/100558941739209/posts/222122566249512/
113) Problem 113 – Two Digit Number and its Inverse have difference with units digit 2
https://www.facebook.com/100558941739209/posts/230738622054573/
114) Problem 114 – Linear Equation
https://www.facebook.com/100558941739209/posts/236387294823039/
115) Problem 115 – Letters with Line of Symmetry and not
https://www.facebook.com/100558941739209/posts/236387991489636/
116) Problem 116 – Probability of 5 or 6 on a Fair Die
https://www.facebook.com/100558941739209/posts/236388494822919/
117) Problem 117 – Arithmetic Usage of the Difference of Two Squares Identity
https://www.facebook.com/100558941739209/posts/236388961489539/
118) Problem 118 – Evaluating a Constant Difference Product
https://www.facebook.com/100558941739209/posts/236389388156163/
119) Problem 119 – Evaluating Ratios
https://www.facebook.com/100558941739209/posts/236389711489464/
120) Problem 120 – Pie Chart Angles and Value Ratios
https://www.facebook.com/100558941739209/posts/236390121489423/
121) Problem 121 – No of Three Digit Numbers abc with a+c=11
https://www.facebook.com/100558941739209/posts/236390714822697/
122) Problem 122 – Percentage Increase in Area
https://www.facebook.com/100558941739209/posts/236392038155898/
123) Problem 123 – Angle Chasing in a Triangle with Algebra
https://www.facebook.com/100558941739209/posts/236392391489196/
124) Problem 124 – Calculate Interior Angle of a 720-side Regular Polygon
https://www.facebook.com/100558941739209/posts/236392994822469/
125) Problem 125 – How many Terminal Zeroes for 9 power 999 plus 1
https://www.facebook.com/100558941739209/posts/236393354822433/
126) Problem 126 – Find area of Triangle ODM
https://www.facebook.com/100558941739209/posts/240801881048247/
127) Problem 127 – Find area of Trapezoid ABCD
https://www.facebook.com/100558941739209/posts/240802721048163/
128) Problem 128 – Arithmetic Evaluation by Factoring
https://www.facebook.com/100558941739209/posts/244561474005621/
129) Problem 129 – Some Circle and Triangle Geometry
https://www.facebook.com/100558941739209/posts/255407906254311/
130) Problem 130 – UKMT Rhombus Geometry
https://www.facebook.com/100558941739209/posts/270095281452240/
131) Problem 131 – Circles and Tangents
https://www.facebook.com/100558941739209/posts/284087113386390/
132) Problem 132 – Algebra Number Puzzles
https://www.facebook.com/100558941739209/posts/287425849719183/
133) Problem 133 – Evaluating Exponent Limits to Infinity
https://www.facebook.com/100558941739209/posts/288708819590886/
134) Problem 134 – Algebra as a Single Fraction
https://www.facebook.com/100558941739209/posts/288709809590787/
135) Problem 135 – How many odd numbers with digits 3 4 6 8 repeated twice except 3
https://www.facebook.com/100558941739209/posts/298525075275927/
136) Problem 136 – Maximum number of boxes Crossed by a Triangle
https://www.facebook.com/100558941739209/posts/298526991942402/
137) Problem 137 – Sum of all numbers divisible by 2 and 3 less than 100
https://www.facebook.com/100558941739209/posts/298529508608817/
138) Problem 138 – Ratios of three Quantities
https://www.facebook.com/100558941739209/posts/309596667502101/
139) Problem 139 – Isosceles Triangle Geometry
https://www.facebook.com/100558941739209/posts/309597264168708/
140) Problem 140 – Mixture in a Cordial plus Water
https://www.facebook.com/100558941739209/posts/341633077631793/
141) Problem 141 – Sequence of ones digits
https://www.facebook.com/100558941739209/posts/344672397327861/
142) Problem 142 – Working Backwards Strategy for an Equation
https://www.facebook.com/100558941739209/posts/346648370463597/
143) Problem 143 – Double Summation of First N natural numbers hidden among Addends
https://www.facebook.com/100558941739209/posts/353706499757784/
144) Problem 144 – Quadratic Function and Surd Properties
https://www.facebook.com/100558941739209/posts/380016457126788/
145) Problem 145 – Quadratic Functions and other Algebra
https://www.facebook.com/100558941739209/posts/393605375767896/
146) Problem 146 – Numerical Simplification with Exponent
https://www.facebook.com/100558941739209/posts/397007375427696/
147) Problem 147 – Similar Triangles with Pythagoras use Calculator
https://www.facebook.com/100558941739209/posts/412896380505462/
148) Problem 148 – Trigonometric Equation for Sec and Cosec without a Calculator case
https://www.facebook.com/100558941739209/posts/417441550050945/
149) Problem 149 – Canoe and Water Current
https://www.facebook.com/100558941739209/posts/423238716137895/
150) Problem 150 – SASMO 2013 Primary – Next Number in Sequence
https://www.facebook.com/100558941739209/posts/432058535255913/
151) Problem 151 – Odd Number Squares and Pythagorean Generation
https://www.facebook.com/100558941739209/posts/432060355255731/
152) Problem 152 – Frobenius Number Computation
https://www.facebook.com/100558941739209/posts/435848384876928/
153) Problem 153 – Count the Number of Line Segments
https://www.facebook.com/100558941739209/posts/444278490700584/
154) Problem 154 – Aircraft Speed with Wind Speed Consideration for 2 Cities
https://www.facebook.com/100558941739209/posts/449705323491234/
155) Problem 155 – Four Box Number Puzzle Type
https://www.facebook.com/100558941739209/posts/453312193130547/
156) Problem 156 – Squares are non-negative idea
https://www.facebook.com/100558941739209/posts/462282295566870/
157) Problem 157 – Angle Chasing Problems
https://www.facebook.com/100558941739209/posts/474026507725782/
158) Problem 158 – A Pythagorean Dilemma in relating areas
https://www.facebook.com/100558941739209/posts/474776114317488/
159) Problem 159 – Number Pattern SASMO 2016 Y6
https://www.facebook.com/100558941739209/posts/480829470378819/
160) Problem 160 – Palindromic Number in WIMO 2018 Final-Mock Primary6 No. 29
https://www.facebook.com/100558941739209/posts/481622263632873/
161) Problem 161 – How many Digits in product WIMO 2018 Final-Mock Primary6 No. 30
https://www.facebook.com/100558941739209/posts/481622776966155/
162) Problem 162 – Algebra Trick WIMO 2018 Final-Mock Primary6 No. 27
https://www.facebook.com/100558941739209/posts/483914116737021/
163) Problem 163 – Minimize an Algebraic Fraction WIMO 2018 Final-Mock Primary6 No. 28
https://www.facebook.com/100558941739209/posts/483914650070301/
164) Problem 164 – Mixed Number Pattern
https://www.facebook.com/100558941739209/posts/486641836464249/
165) Problem 165 – Three Variable Simultaneous Equation WIMO 2018 Final-Mock Primary6 No. 26
https://www.facebook.com/100558941739209/posts/491271129334653/
166) Problem 166 – Average Calculations in 6 variables WIMO 2018 Final-Mock Primary6 No. 25
https://www.facebook.com/100558941739209/posts/491271562667943/
167) Problem 167 – Counting Face and Surface Area in 3D WIMO 2018 Final-Mock Primary6 No. 23
https://www.facebook.com/100558941739209/posts/494410269020739/
168) Problem 168 – Increase in Height Trick for Submerged objects WIMO 2018 Final-Mock Primary6 No. 24
https://www.facebook.com/100558941739209/posts/494410769020689/
169) Problem 169 – How many lines given no. of points WIMO 2018 Final-Mock Primary6 No. 22
https://www.facebook.com/100558941739209/posts/503916121403487/
170) Problem 170 – Partition of Triangle into 4 Areas WIMO 2018 Final-Mock Primary6 No. 21
https://www.facebook.com/100558941739209/posts/503916561403443/
171) Problem 171 – Maximum Perimeter given Area of Rectangle WIMO 2018 Final-Mock Primary6 No. 20
https://www.facebook.com/100558941739209/posts/508138554314577/
172) Problem 172 – Folding Paper Area Trick WIMO 2018 Final-Mock Primary6 No. 19
https://www.facebook.com/100558941739209/posts/508139047647861/
173) Problem 173 – Remainder 222…222 divided by 41 WIMO 2018 Final-Mock Primary6 No. 18
https://www.facebook.com/100558941739209/posts/514123667049399/
174) Problem 174 – Last Digit Sum Calculation WIMO 2018 Final-Mock Primary6 No. 17
https://www.facebook.com/100558941739209/posts/514124060382693/
175) Problem 175 – Factorial Sum last Digit WIMO 2018 Final-Mock Primary6 No. 16
https://www.facebook.com/100558941739209/posts/520635289731570/
176) Problem 176 – Nested Fraction Addition WIMO 2018 Final-Mock Primary6 No. 15
https://www.facebook.com/100558941739209/posts/520635676398198/
177) Problem 177 – 427 Balls Take out 5 to 13 Balls out Winning Strategy
https://www.facebook.com/100558941739209/posts/522688776192888/
178) Problem 178 – If 2015726ab is a Multiple of 99 WIMO 2018 Final-Mock Primary6 No. 14
https://www.facebook.com/100558941739209/posts/525600269235072/
179) Problem 179 – Sum of all positive divisors of 2880 WIMO 2018 Final-Mock Primary6 No. 13
https://www.facebook.com/100558941739209/posts/525600715901694/
180) Problem 180 – KMC Benjamin 2019 No. 22 – Counting Selfies
https://www.facebook.com/100558941739209/posts/529573128837786/
181) Problem 181 – Telescoping Product WIMO 2018 Final-Mock Primary6 No. 11
https://www.facebook.com/100558941739209/posts/532001868594912/
182) Problem 182 – Telescoping Sum WIMO 2018 Final-Mock Primary6 No. 12
https://www.facebook.com/100558941739209/posts/532002185261547/
183) Problem 183 – How many digits used in Page Numbers
https://www.facebook.com/100558941739209/posts/537243864737379/
184) Problem 184 – Pigeon Hole with 12 red 15 green 18 blue to get 3 pairs of different colors
https://m.facebook.com/story.php?story_fbid=519252796655044&id=100057109853813
185) Problem 185 – Recurring Decimals WIMO 2018 Final-Mock Primary6 No. 9
https://m.facebook.com/story.php?story_fbid=519253299988327&id=100057109853813
186) Problem 186 – Difference of Squares sum WIMO 2018 Final-Mock Primary6 No. 10
https://m.facebook.com/story.php?story_fbid=519253696654954&id=100057109853813
187) Problem 187 – Finding Number given condition of remainders
https://m.facebook.com/story.php?story_fbid=527105039203153&id=100057109853813
188) Problem 188 – Palindrome Problem – PMONK 2018 – IMC 2013
https://m.facebook.com/story.php?story_fbid=531953345384989&id=100057109853813
189) Problem 189 – Number Puzzle Hidden in Addition as Operator Symbol
https://m.facebook.com/story.php?story_fbid=536790381567952&id=100057109853813
190) Problem 190 – Triangle Inequality
https://m.facebook.com/story.php?story_fbid=536792851567705&id=100057109853813
191) Problem 191 – Arithmetic Series 2018 Final-Mock Primary6 No. 7
https://m.facebook.com/story.php?story_fbid=542192947694362&id=100057109853813
192) Problem 192 – Telescoping Sum WIMO 2018 Final-Mock Primary6 No. 8
https://m.facebook.com/story.php?story_fbid=542193164361007&id=100057109853813
193) Problem 193 – N2 + 5 as sum of four distinct Perfect Squares
https://m.facebook.com/story.php?story_fbid=544034167510240&id=100057109853813
194) Problem 194 – Arranging Words in CALCULATOR
https://m.facebook.com/story.php?story_fbid=550154050231585&id=100057109853813
195) Problem 195 – Missing Number Exponent Difference Pattern
https://m.facebook.com/story.php?story_fbid=565824275331229&id=100057109853813
196) Problem 196 – Angle Chasing Circle with Exterior Angles
https://m.facebook.com/story.php?story_fbid=567466308500359&id=100057109853813
197) Problem 197 – Sum of all multiples of 5 or 7 or both less than 200
https://m.facebook.com/story.php?story_fbid=575287081051615&id=100057109853813
198) Problem 198 – Sum of all positive integers less than 100 with no digit 7
https://m.facebook.com/story.php?story_fbid=575287704384886&id=100057109853813
199) Problem 199 – Circle Chord and Radius Orthogonal
https://m.facebook.com/story.php?story_fbid=586701179910205&id=100057109853813
200) Problem 200 – Office Cubicle Arragement
https://m.facebook.com/story.php?story_fbid=586701596576830&id=100057109853813
201) Problem 201 – A Last Digit Sum
https://m.facebook.com/story.php?story_fbid=598836818696641&id=100057109853813
202) Problem 202 – Picture Puzzle Math
https://m.facebook.com/story.php?story_fbid=612056947374628&id=100057109853813&mibextid=Nif5oz
203) Problem 203 – Int Olym of Science Number Puzzles
https://m.facebook.com/story.php?story_fbid=617834280130228&id=100057109853813&mibextid=Nif5oz
204) Problem 204 – Picture Puzzle Type
https://m.facebook.com/story.php?story_fbid=617835150130141&id=100057109853813&mibextid=Nif5oz
205) Problem 205 – Number Puzzle type
https://m.facebook.com/story.php?story_fbid=617836303463359&id=100057109853813&mibextid=Nif5oz
206) Problem 206 – Diophantine Type
https://m.facebook.com/story.php?story_fbid=617836680129988&id=100057109853813&mibextid=Nif5oz
207) Problem 207 – Cube Root Surd Example
https://m.facebook.com/story.php?story_fbid=646122353968087&id=100057109853813&mibextid=Nif5oz
208) Problem 208 – Power of Point and Intersecting Chords
https://m.facebook.com/story.php?story_fbid=670464694867186&id=100057109853813&mibextid=Nif5oz
209) Problem 209 – Table Height Quiz
https://m.facebook.com/story.php?story_fbid=683535033560152&id=100057109853813&mibextid=Nif5oz
210) Problem 210 – Area of Equilateral Triangles split into 4 smaller ones
https://m.facebook.com/story.php?story_fbid=694453445801644&id=100057109853813&mibextid=Nif5oz
211) Problem 211 – Work Rate Puzzle man woman boy
https://m.facebook.com/story.php?story_fbid=705957041317951&id=100057109853813&mibextid=Nif5oz
212) Problem 212 – Number Pattern
https://m.facebook.com/story.php?story_fbid=718172876763034&id=100057109853813&mibextid=Nif5oz
213) Problem 213 – Similar Triangle Corresponding Ratio
https://m.facebook.com/story.php?story_fbid=718173280096327&id=100057109853813&mibextid=Nif5oz
214) Problem 214 – Algebra find value of c
https://m.facebook.com/story.php?story_fbid=729502272296761&id=100057109853813&mibextid=Nif5oz
215) Problem 215 – Travel car n train
https://m.facebook.com/story.php?story_fbid=750506386863016&id=100057109853813&mibextid=Nif5oz
216) Problem 216 – Find Area of Triangle part in Square pattern
https://www.facebook.com/permalink.php?story_fbid=pfbid023AUaqsCyiqD92fockzMdhZbfSJvCS26NpsC4w5aj5PsVoHaTE2hcuJSVatSTxkvFl&id=100057109853813
217) Problem 217 – Area of Isosceles Triangle inside squares and circle
https://www.facebook.com/permalink.php?story_fbid=pfbid02AEMZ16R382ig4ChEvFpG8JXQ7xecAnq1cCFgkuPxRm5vmEsMD7918t2WrEPsuBwel&id=100057109853813
218) Problem 218 – How many even 5 digit numbers using these digits 0 1 4 5 6 7 9
https://www.facebook.com/permalink.php?story_fbid=pfbid0mKVB32oNina6wYZDsKfMb3tzRjvWSRTKq7w54R2EeVE7yhxkN8GSgjTLFfSUFMT3l&id=100057109853813
219) Problem 219 – Number System Puzzle
https://www.facebook.com/permalink.php?story_fbid=pfbid0DzZz4bYd74DNQaxDNJ7EmndrSUDRFrxSv4dmnoWmsz1bVsSgQewifBidLpYxCmDHl&id=100057109853813
220) Problem 220 – Surd Simplification
https://www.facebook.com/permalink.php?story_fbid=pfbid021TPDKT8pitqM5oXamibKBsi4pHuEj9AsKDSrPK5g9KB4tgBtLy16ef1J6rdpPTbl&id=100057109853813
221) Problem 221 – Basic Surd Calculation
https://www.facebook.com/permalink.php?story_fbid=pfbid0PUtRHJot7LdvwCheYZqkZudCnYgBLmozgkdwmfp3E9AzFFL18rcvYTRJLW4FD92el&id=100057109853813
222) Problem 222 – Surd denominator trick
https://www.facebook.com/permalink.php?story_fbid=pfbid0hyL8RWJiheQMDnzoKgRd3pnYuK6mq89UV7ohoyWPF2bREuY7jW5LMzDRsqwrTpeUl&id=100057109853813
223) Problem 223 – Seeming Parametric 2 variable equation with surd with unique answers
https://www.facebook.com/permalink.php?story_fbid=pfbid02LN2yKhi38uaL6CwNq8TCWeGDC3CiZa2hZUEXqPYv7bbSHV2a8xz63FaMHVJ37gerl&id=100057109853813
224) Problem 224 – X2 minus Y2 is 2023
https://www.facebook.com/permalink.php?story_fbid=pfbid0XUPwfBtS63AKGTwTmgFJaogzqrYqi8dfNT9ia2wdPxWVKFXTFQ5G2ojRY1Y3VL8El&id=100057109853813
225) Problem 225 – Fraction Rewriting PMO Qualifiers 2023 No. 1
https://www.facebook.com/permalink.php?story_fbid=pfbid0dHreq8wLGgtuPvkcxt4hXyNcXdYxykgUjvjtLvki9BafA1iawGiTUcjr9ztwinpol&id=100057109853813
226) Problem 226 – Rhombus Area diagonals given PMO Qualifiers 2023 No. 2
https://www.facebook.com/permalink.php?story_fbid=pfbid02ktjhk5uLfgEgCEcpmju3NuzTfTzj5AZ279r2z6537xoBFNn5G2BUMUfToLn5DFugl&id=100057109853813
227) Problem 227 – Mean add or subtract members – PMO Qualifiers 2023 Part 1 No. 3
https://www.facebook.com/permalink.php?story_fbid=pfbid02JTDMd3bEaRoM3z6yb9ZroChvDBzpeVVEhLB5p4KXpjjG3x84uvkTHDr4MhWMjwoxl&id=100057109853813
228) Problem 228 – Geometric Sequence modification
https://www.facebook.com/permalink.php?story_fbid=pfbid0yZjA9KV3wY5Hh93SPmtLfA8RGRxradWvX7yDwC4jJPBAuq1PfC62usqnpeLXFemWl&id=100057109853813
229) Problem 229 – IMOCSEA Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid02Y5UVZioMzzjeCUnipY2kcXipXU8DpmdtuMX5WpcKNFvazxvTLKHPriqXkxc1UCt8l&id=100057109853813
230) Problem 230 – Area Split within Triangle – SEAMO X Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0o1jLsjty6mSufAmyvb9Y3st1npFPQjZBHwWyFVSt5EcueCahK63xjpNzSNEqmf7Ql&id=100057109853813
231) Problem 231 – Finite Sum Rewritten – SEAMO X Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid02fAsNbAtPAiJ5F375esjev9m81Zh9kSNTFvPrm6FxzWspJYxRmHUtWtNtXVtiKiETl&id=100057109853813
232) Problem 232 – Divisibility Rule Trick – SEAMO X Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0DmxGB1g9gTpx7TE2TXkcSaCAuZZMGE1wEDkDz4tbEHABESa7eA9MUaU9fQb59gnXl&id=100057109853813
233) Problem 233 – Area in Quadrilateral Split Invariants – SEAMO X Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid022oUb9spZYmY145RRu9XPKncY2QaR99NAaDqe24DhQspCXyDLR76MUHPaK5Nkv9Rgl&id=100057109853813
234) Problem 234 – Geometric Series and its Reciprocal
https://www.facebook.com/permalink.php?story_fbid=pfbid02uhzENhkL5xDr7oY65m7YpHtidMSPR8aTtj88QiDzaXRqHNjHVviNLa21iin1ybMKl&id=100057109853813
235) Problem 235 – Numbers in Circles with Fixed Sum
https://www.facebook.com/permalink.php?story_fbid=pfbid0uyVimUBPWHwnk6GmfBXepNc7MyYop55ffZ7SGXuE8HqrXSv5U446pW6tp5K5Qep9l&id=100057109853813
236) Problem 236 – Triangle Circle Triangle Inscribed
https://www.facebook.com/permalink.php?story_fbid=pfbid032poTNneRKbSj1j2SXoWYiJnRR16DS25yL3Y9DWiVgdGXNazwKpyDUyRpo5sMf7Tql&id=100057109853813
237) Problem 237 – Triangle Area Split in Reverse
https://www.facebook.com/permalink.php?story_fbid=pfbid037hezqhQhoHnw6Na9fr2YHUdWb6WghLJ4JfXKMrHP8Whc3MZwwx2D1qmRfPUtc7zbl&id=100057109853813
238) Problem 238 – How many triangles in a 3 x 3 grid
https://www.facebook.com/permalink.php?story_fbid=pfbid02S5EP5hXd159NGKmzfhUp98Egcj1ur5bryRQFGyewcLwWCUyfnBJLRjhs1rGPPUNwl&id=100057109853813
239) Problem 239 – Area of Sector in Circle
https://www.facebook.com/permalink.php?story_fbid=pfbid02SaVvEnA7xyfP6Nd5xkGzgSN7E6LZFvaU36czZtdLNwp9f12UxRjKT7JNgkZ9SWFGl&id=100057109853813
240) Problem 240 – Midpoint Theorem
https://www.facebook.com/permalink.php?story_fbid=pfbid04yKDTd7YCMEMzRHhAPzwz1cSEQD4DdJQFF7a14DEwfDgosZXXvYDqVGTS76Qr6dVl&id=100057109853813
241) Problem 241 – Areas formed via circle intersections
https://www.facebook.com/permalink.php?story_fbid=pfbid0sKCBcT1ZPWnqPmAT5LvCqKRqhvQvGXnMWx6z3zgYZpAmCSCUZNr2L7aseL289Xeyl&id=100057109853813
242) Problem 242 – Number Sequence Pattern – Grade 1 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0MqR1DoVBaes9oW5wu44yfUEyfYdfEATyvmmbVjSx59pRbm2TTmzf5r41wcrLinwZl&id=100057109853813
243) Problem 243 – Cryptarithm – Grade 1 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0y54f5ZUt17ruHfCCsKjScJzFuUezEepxN3tuvVHrRzs91UKhVivCZiGyYDWrA7Qql&id=100057109853813
244) Problem 244 – Fruits on a Scale Balance – Grade 2 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0RXFLkdFuKyga9Mu3Ppdc8KdDjjWhFE3s1wckyxQ9VDAc9GWciwEQuwYX8dqgvx3gl&id=100057109853813
245) Problem 245 – Correct n Wrong Answer type Problem – Grade 2 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0HbukgCqpc6NbwcYqBVu9JSvMjkY4i6nypQ6jW23vvrTbYCA8UA96UYQCv66YJgXMl&id=100057109853813
246) Problem 246 – Count most interior angles – Grade 3 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0FUHUn283XtaFm2HX6tjFNV1wVZ8Si63c96ABzjFMvWc4qtSFnLfmCyXj1W3zBJDtl&id=100057109853813
247) Problem 247 – Net of a Cube – Grade 3 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0EaJP8KEDnfnHmrnAGjfeHRovFRmxNMk39Rfpm5bfdRVYGJs2t2tvDejcH4HL3NQkl&id=100057109853813
248) Problem 248 – BODMAS Rule Arithmetic – Grade 4 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid02wtNPprrUdFC1V1k8yCJHheVQ1mF5MbLnXZhv7yQFYwFYqjCTgT5svC2jC2QScXtQl&id=100057109853813
249) Problem 249 – Fixed Sum in 3 Adjacent Boxes – Grade 4 WMI Sample
https://www.facebook.com/permalink.php?story_fbid=pfbid0pTKPvvB5weR63xSEcx7XW2dHSrCQcVM9TbvQGANk91ZzYcoqXADjkf8F6DqyJn5ul&id=100057109853813
250) Problem 250 – Row Column Sums equal
https://www.facebook.com/permalink.php?story_fbid=pfbid024aB8CXBErnT3mxEBftptbrLSbVxxBoHjcxCqK8w4aYtoD5h28rEapXfqthFKXEWyl&id=100057109853813
251) Problem 251 – Age Problem 1
https://www.facebook.com/permalink.php?story_fbid=pfbid025m6nfvtFXNPDNYxpQWThGhfN3aSaSHKMMW361SAjy4kmfome2NU45PiKtik3sjkpl&id=100057109853813
252) Problem 252 – Age Problem 2
https://www.facebook.com/permalink.php?story_fbid=pfbid02pUy7h2RfTj5mCGsqVVhMnT1sv1i1fqXEhnQ9kvm2yWBVJDU3DWbPBdifiwozWbqLl&id=100057109853813
253) Problem 253 – Insert Brackets to make equation true BdMO 2023
https://www.facebook.com/permalink.php?story_fbid=pfbid0NbZCky6xwciLEEBvwZtfjhzC73XeBV2j1sAEFAt79zpvWJXo11FQZjuSyGPqqX1gl&id=100057109853813
254) Problem 254 – Boys Girls Cats and Dogs with Biscuits BdMO 2023
https://www.facebook.com/permalink.php?story_fbid=pfbid0239JgyDgEMwU1EzPT9mFkQpJWEYXk98vSXGiHa7oP2Udx6KniRR8zaRKvZAWNGHfNl&id=100057109853813
255) Problem 255 – Price Mark Up
https://www.facebook.com/permalink.php?story_fbid=pfbid0iiUTHwbmXNnD4YUwMbJd8TuZC8MTfqBVh59QGNixUL1yA7KEGqDhtayFgY1ztPzAl&id=100057109853813
256) Problem 256 – Fraction Algebra Rewriting
https://www.facebook.com/permalink.php?story_fbid=pfbid02quSKNWH8c82QkZ5vhhPW8aFuEYi9hHnXUw3LBhRxdjjixNw5bYiQVCMS5BupBbphl&id=100057109853813
257) Problem 257 – Length of Common Tangent
https://www.facebook.com/permalink.php?story_fbid=pfbid02KseP2A1c3D9s9c5mpCpkqQGUnTnZJQ5sPmryi1pfgGG3ungUgPjqxWSpDgKPZAuDl&id=100057109853813
258) Problem 258 – Whole Number Equations
https://www.facebook.com/permalink.php?story_fbid=pfbid02TQvTmdyDEHxQjKHCXYWzWkuGMfU5MYytDks8WteqjD6eeJYJrEEFueWMoyrq5a3El&id=100057109853813
259) Problem 259 – Speed Comparisons
https://www.facebook.com/permalink.php?story_fbid=pfbid034B3zuGL74LaMwDxE3cGJDi9C1jPAEm4VHp66pyTVw1srMDzMpPjCazEpQtcaKS2cl&id=100057109853813
260) Problem 260 – Algebra of Squares
https://www.facebook.com/permalink.php?story_fbid=pfbid0puZMhFj9MtdkpWurLPF41Sp5Khvf5HN6anxW5kPbMD7up6iS5Ps9CimZCRbXUW7Cl&id=100057109853813
261) Problem 261 – Number Patterns
https://www.facebook.com/permalink.php?story_fbid=pfbid02dcxD8Uay7tz1ZVWzCw1TgdoMJiX6ewF6ftfdVR4saLZ7yHjG82SVS4HCkSgD3hnPl&id=100057109853813
262) Problem 262 – Simple Interest
https://www.facebook.com/permalink.php?story_fbid=pfbid02QrHjWkLM5SnpnKsBhQEcDyzcyDaqNtx3qwiWruq9nrAjZxiCS5mZhqw6LmeRCSXol&id=100057109853813
263) Problem 263 – Age Ratios and Bar Model
https://www.facebook.com/permalink.php?story_fbid=pfbid02hhHN5pCAGhmHhovSNSPyuAcydLHAaJ2AxKEh7MKF7BLC3RGibWEkPVoJCtDdfoFCl&id=100057109853813
264) Problem 264 – IMONST 2023 Primary Sample Section B P1 to P6
https://www.facebook.com/permalink.php?story_fbid=pfbid0EoH4Y5tyKinkEjE6WczqAUaUiF3judtta2ExkDyxLGPUh2yYBJoGd9bur8A7L8tgl&id=100057109853813
Thank you
Jonathan Ramachandran,
B.Sc., Th.D. (Hon.), D.Div. (Hon.), D.Min. (Hon.)
My CV (14 September 2025) Link:
https://drive.google.com/file/d/19YuhL31EpC4l3JnHcbbQNio-ueogAEXQ/view?usp=sharing
#My ORCID Link: https://orcid.org/0009-0008-4669-1077
#GoogleScholar Link:
https://scholar.google.com/citations?hl=en&user=Bv7IFrAAAAAJ
#Academia Link:
https://independent.academia.edu/RamachandranJonathan
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#CoachJonathanRamachandran #AnonymousChristian
