Question

List all rational numbers

Let A={0,0.2222,√3,2,-2/3,-7,√7}

Answer 1

[0,0.2222,2,-2/3,-7]

Explanation:

A rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.

`0` can be written as
`(0)/(1)`,so it is a rational number.

`0.2222` can be written as
`(2222)/(10000)`,so it is a rational number.

`√(3)` cannot be written as a fraction,so it is not a rational number.

`2` can be written as
`(2)/(1)`,so it is a rational number.

`(-2)/(3)` can be written as
`(-2)/(3)`,so it is a rational number.

`-7` can be written as
`(-7)/(1)`,so it is a rational number.

`√(7)` cannot be written as a fraction,so it is not a rational number.