what is rational number?what is irrational number?how can we conclude weather it is a rational or irrational number?

Asked by  | 2nd Jun, 2011, 12:00: AM

Expert Answer:

Rational number:
If the number is in fraction form that is p/q (q is not equal to zero) then it must be a rational number.
If the number is in decimal form and its decimal points are either terminating or non-terminating repeating then also it is a rational number.
for eqs. 2/5, -3/7, 0.23,  etc.
Irrational number:
A decimal number whose decimal representation is non-terminating and non-repeating is called irrational number. Also the number with radical sign are also irrational.
for eg. 1.252552555..., etc. 

Answered by  | 2nd Jun, 2011, 05:17: PM

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