Question

Which of the following is a rational number?

the square root of 22, square root of 23, square root of 24, square root of 25

A. the square root of 22
B. the square root of 23
C. the square root of 24
D.the square root of 25

Answer 1

Remember that perfect square roots like sqrt1, sqrt4, etc. are rational, as these are equal to integers.

Every other square root is irrational

So look for a perfect square root

If you’re stuck, try listing squares

1*1 = 2, 2*2 = 4, etc.