A and B are in a team called AB, playing against C. If AB team wins they win Rs 3, nothing otherwise. The Game: A and B are placed in 2 separate rooms far away. A will toss a coin and B will also toss a coin; A will have to guess the outcome of B's toss and B will guess A's. If both guesses are r...

For which values of the positive integer $n$ is it possible to divide the first $3n$ positive integers into three groups each of which has the same sum? This puzzle is from a UK Junior Mathematical Olympiad.

My friend gave me this on a piece of scribbled paper. This is a neat version I was able to make out of it using a program, I wouldn’t want to show you the original since the paper looked moldy. He said the answer started with an N. Here is the transcript: XPOTGHELE EBCTOPLAZ PYSFPHPGS XHEWUQSVW...

Fold the shape into a rectangle such that the rectangle is 8 layers thick everywhere. A puzzle for this type of orgami puzzle game made by Ωmega_3301, similar to this question.