Question

`sqrt0.4` is a/an ______.

Options

• natural number

• integer

• rational number

• irrational number

Answer 1

`sqrt0.4` is an irrational number.

Explanation:

Given: Number `sqrt0.4`

Rational numbers are the numbers which can be written in the form of p/q where p and q are integers and q is non-zero.

Irrational numbers are numbers that are not rational.

`sqrt0.4 = sqrt4/10`

= `2/10`

As `sqrt10` cannot be written in the form of p/q so it isan irrationall number.

Therefore, `sqrt0.4` is an irrational number.