Math lovers, rejoice! Pi Day is almost here.
Pi (π) describes the ratio of the circumference of a circle to its diameter, a number that's awfully close to, but not quite 3.14. Since Pi is an irrational number, the digits of Pi never end and the pattern of numbers doesn't repeat. According to the Pi Day website, "With the use of computers, Pi has been calculated to over 1 trillion digits past the decimal."
The concept of Pi has fascinated people for thousands of years. Now, you can join in! Watch Pi-themed YouTube videos, send e-cards to your friends, or sign up now to solve logic puzzles on March 14th at the Pi Day Challenge.