Math Pattern: Find the formula (ie the nth term) for the sequence 0,0,1,3,6,10… ByAnonymous Christian September 5, 2014July 22, 2016 Answer 0,0,1,3,6,10 Let A(n) denote the (n + 2)th term in the sequence. We “choose” ( n +…
A Probability question ByAnonymous Christian September 5, 2014July 22, 2016 Question A bag of candies contains the following: 50 red candies 52 green candies 52 blue candies 50…
An example of a Math Olympiad Problem ByAnonymous Christian September 5, 2014July 22, 2016 Question I have four children. The age in years of each child is a positive integer between 2…
An interesting brain teaser ByAnonymous Christian September 5, 2014July 22, 2016 Question We have 100 lamps, numbered 1, 2, …, 100. Initially they are all off. 1) we press…
Math Pattern: 1,2,6,24,120 Find pattern and what comes next? ByAnonymous Christian September 5, 2014July 22, 2016 Answer Here it is : Let A(n) denote the nth term. 1 x 1 = 1 = A…
Complex Numbers: Write each espression in the form a +bi where a and b are real numbers: (8 +sqrt -20)/-4? ByAnonymous Christian September 5, 2014 Answer 8 +sqrt of -20 divided by -4. sqrt ( -1 ) = i [ 8 +sqrt of…
Number Bases: Convert from Hexadecimal (Base 16) to Decimal (Base 10)? ByAnonymous Christian September 5, 2014 Answer A base 10 analogy will be helpful. In base 10 we start with 10^0, 10^1 etc for…
Basic Algebra Explanation: “How algebra works?” ByAnonymous Christian September 5, 2014 Question Solve the equation(5/12)y=3/4 Answer Firstly, LHS = Left Hand Side. RHS = Right Hand Side. (5/12)y =…
Solve using the multiplication principle: 5 b < -10? ByAnonymous Christian September 5, 2014 Answer I’ll show you a slightly different way. I am assuming you know basic algebra. See, 5b <…
Prime number question ByAnonymous Christian September 5, 2014July 22, 2016 Question 1) Show that if p >=5 is a prime number, then p^2 + 2 is composite (hint:…