Question

Choose the correct alternative answer for the question given below.

Which one of the following is an irrational number ?

Options

• `sqrt (16/25)`

• `sqrt 5`

• `3/9`

• `sqrt 196`

Answer 1

Since , 

`sqrt(16/25) = 4/5` is a rational number ;

`3/9` is a rational number ,

`sqrt 196 = 14` is a rational number ; and 

`sqrt 5` is an irrational number.