SEE ALSO: A math problem for 14-year-olds is stumping the world The question shows a circular puzzle with five numbers in it. There are four corresponding blanks that are meant to be filled in ...

Smith has two children. At least one of them is a boy. What is the probability that the other child is a boy? Jones has two children. The older one is a girl. What is the probability that the ...

In honor of April Fools’ Day, I offer the puzzling case of the Lesser Fool. In a fictional town, there lived an odd wanderer. People would present him with two amounts of money or goods and ask ...

A carpenter, working with a buzz saw, wishes to cut a wooden cube, three inches on a side, into 27 one-inch cubes. This can be easily done by making six cuts through the cube, keeping the pieces ...