March 14 is Pi Day, which gives you a hint to the start of the irrational number that is central to a lot of mathematics. In a video, Duke students competed to provide the longest string of Pi digits.

Pi Day is celebrated today, 14 March, round the world. Pi (Greek letter π) is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its ...

Happy Pi Day! We celebrate pi on March 14 because 3-14 gives the first three digits of this famous number. But what’s the big deal about pi anyway? Why does it get a day? Well, for starters ...