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

David Genter earned both bachelor’s and master’s degrees from Michigan Technological University in mechanical engineering. He ...

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 ...

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.

TOKYO -- A Japan-U.S. research team on March 10 offered a mathematical proof that "Dudeney's dissection," a challenge to cut an equilateral triangle and use the parts to create a square with the ...