Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...

Math Riddles are so challenging, but that makes them worthwhile to solve. Math riddles are logical problems that require strong analytical abilities, high IQ, knowledge of math concepts, and good ...

If you have six equally spaced points on a circle and join three of them, you can make three different triangles. (Two triangles are counted as the same if one is a mirror image or rotation of the ...