Question

Which of these number is irrational?

the square root of 36
the square root of 49
the square root of 13
the square root of 121

Answer 1

The square root of 36 is 6, the square root of 49 is 7, the square root of 121 is 11. So the answer is the square root of 13.

Answer 2

The answer is the square root of 13 because it is the only one that gets square rooted and does not come out even. Hope this helped.