Question

is an irrational number.

• A. $\sqrt{5}$
• B. $5^2$
• C. $\frac{1}{2}$

Answer 1

The correct option is A $\sqrt{5}$

Square roots of prime numbers are always irrational. Hence, $\sqrt{5}$ is an irrational number.

$5^2$ = 25 and $\frac{1}{2}$ satisfy the properties of a rational number. So, these are rational numbers.