Question

Which of the following is/are rational number(s) ?

• A. $\sqrt{2}$
• B. $\frac{5}{2}$
• C. $\frac{3}{2}$
• D. $\sqrt{4}$

Answer 1

Answer: (B), (C), (D)

The correct options are
B $\frac{5}{2}$
C $\frac{3}{2}$
D $\sqrt{4}$

Numbers that can be expressed in the form $\frac{p}{q}$ where p,q are integers and $q\ne 0$.

Therefore,
$\frac{5}{2}$ and $\frac{3}{2}$ are rational numbers/

Also,
$\sqrt{4}$ = 2. Hence, it's a rational number as well.

$\sqrt{2}$ cannot be represented in the $\frac{p}{q}$ form. Hence, it is not a rational number.