Math riddles and puzzles come in plenty of different varieties. Some more straightforward number puzzles require calculations ...

One number is unknown. Can you figure out what it should be? Show puzzle solution Each number is the sum of the squares of the digits of its predecessor.

A challenging brainteaser tests critical thinking with a math problem of finding the missing value ... proving beneficial in later life. Solution to the puzzle is -13.

Prove that the number of dots with an odd number of lines that connect them is even. Show puzzle solution Because two people are involved in every handshake, if we add up the number of handshakes ...

For a quick look start with this video. This lecture gives you the necessary foundations to build your own move sequences for a variety of other puzzles. However, in this basic solution I do hope to ...

Our basic 5-step solution gives a wonderfully simple approach to solving the cube which doesn't require any memorization. However, you won't be winning any speed solving contests with it. If you want ...

in a magazine's puzzle column in 1902. While many answers were submitted, just one solution was awarded a prize. It involved cutting the equilateral triangle into four pieces. However, whether ...