Question

Which number is a rational number?
A. √21
B. √32
C. √50
D. √64

Answer 1

The only rational number among the given options is √64.

Step-by-step explanation:

A rational number is a number that can be expressed as a fraction, where the numerator and denominator are both integers. The only option out of A, B, C, and D that is a rational number is D. √64.