Those numbers which can be written in the form are called Rational Numbers.

Since is of the form , that's why it is a rational number. Also the decimal

representation of is non-terminating but repeating (because after decimal the number

142857 will repeat every time). So, is a rational number.

But is not rational because because is not exactly equal to . So, is irrational.

Posted by Shridhar Kaushi...on 5/4/12

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