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A LCM Fact
2,520 is the “smallest” number which is divisible by “all” numbers from 1 to 10. How? Why? LCM…
Algebra: Solve x for [ {2 + (3^1/2)}^1/2]^x + [{2 – (3^1/2)}^1/2]^x = 4?
Answer The trick is this. SQUARE THE EQUATION. Note that : [{2 + (3^1/2)}^1/2]^x = [{2 + (3^1/2)}^(x/2)]…
Symmetry
Question The given point (-2,9) lies on the graph that is symmetric about x-axis, y-axis, and origin. State…
Alphametic – Cryptarithm 3 x ABC is CCC
Solve: Alphametic – Cryptarithm 3 x ABC is CCC Question and Solution are in Images below: …
A Basic PigeonHole Question
Question Allison has a box of coloured ribbons. There are 12 red ribbons, 11 white ribbons, 10 yellow…
How many 4-digit numbers are divisible by 3 and have 23 as their last two digits??
Answer Let X be your 4 digit number. X = ‘ab23’ = 1000a + 100b + 2*10 +…
