Question

Which of the following is a rational number?

(a) $1+\sqrt{3}$

(b) π

(c) $2\sqrt{3}$

(d) 0

Answer 1

Since, the sum and product of a rational and an irrational is always irrational.

So, $1+\sqrt{3}$ and $2\sqrt{3}$ are irrational numbers.

Also, π is an irrational number.

And, 0 is an integer.

So, 0 is a rational number.

Hence, the correct option is (d).