IQ Test: Just 3% of the smartest minds in the world can solve this math puzzle in 7 seconds! If you think you are an expert puzzle solver, test your IQ and problem-solving skills now by solving ...

Today's online Comics and Puzzles featuring Sudoku, the Jumble, the Cryptogram and the Crossword puzzle in PDF format. Click on the PDF file of the feature you wish to view or download.

Explore a wide range of mathematical research, including surprising discoveries in gaming, math puzzles, prime numbers and encryption. Skip to main content. Your source for the latest research news.

A classic puzzle conundrum goes like this: You’re in a room with two ropes and a box of matches. Each rope takes exactly an hour to burn all the way across, but it might burn faster through some ...

The number 129 replaces the question mark. The key is the sequence of prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, … The number in each polygon with n sides is the sum of the first n prime ...

Today's online Comics and Puzzles featuring Sudoku, the Jumble, the Cryptogram and the Crossword puzzle in PDF format. Click on the PDF file of the feature you wish to view ...

UPDATE: May 18, 2017, 5:06 p.m. SGT Updated with the Ministry of Education's new statement.. A math question apparently meant for 7-year-olds has left adults befuddled. The bonus math question ...