Question

how to check a number is a rational number or not???
sayy fastlyyy

Answer 1

If the answer comes in decimal it is irrational and if answer comes with no decimal is rational
Example :
$\frac{25}{4}$
6.25 which is irrational number

$\frac{25}{5}$
5 which is rational number

Thank you

Answer 2

hey there
when the number comes out of square root then it is said to be rational and when its decimal expansion is terminating

^_^
as for example √4 = √2*2 = 2(it is rational)
another example 0.666......(its decimal expansion is terminating that is repeating)
^_^