Question

Which list contains ONLY irrational numbers?

Answer 1

the first choice is the contains only irrational number

Answer 2

The correct option is A.

Explanation:

A real number is called a rational number if it can be represented as p/q, where p and q are two integers and q≠0. For example: 2,4/5, 0.2.

A real number is called an irrational number if it can not be represented as p/q, where p and q are two integers and q≠0. For example: π, √2, 2.333....

In option A, all numbers are irrational numbers.

Therefore option A is correct.

In option B,

`√(9)=3`

3 is a rational numbers, so √9 is a rational number.

Therefore option B is incorrect.

In option C,

`√(144)=12`

12 is a rational numbers, so √144 is a rational number.

Therefore option C is incorrect.

In option D,

`√(121)=11`

11 is a rational numbers, so √121 is a rational number.

Therefore option D is incorrect.