Symbolically, the term pi was chosen to stand for something more than a mere number. Prior to its use ... infinitely long sequence of non-repeating decimals. Jones might have suspected that ...

Save guides, add subjects and pick up where you left off with your BBC account. Pi is a number used by school pupils, mathematicians, scientists and engineers across the world when discussing circles.

Defined as the ratio of a circle’s circumference to its diameter, pi is an irrational number that extends infinitely ... to recall pi’s longest-known sequence. The quest to determine pi ...