



 
Mahesh, The number π can't be expressed as a common fraction or a decimal with a finite number of digits or even as a decimal with repeating digits. Calculating digits of π has been a pastime of mathematicians for many years and is now a task that is sometimes used to demonstrate the power of supercomputers. The following quote comes from a page on the MathWorld site.
There is more information on π in many places on the web including a page on Wikipedia and a page on the Math History site at St. Andrews University in Scotland. Harley  


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