Question

Question 05

Which of the following rational number is equal to its reciprocal?

(a) 1

(b) 2

(c) $\frac{1}{2}$

(d) 0

Answer 1

(a) Reciprocal of $1=\frac{1}{1}=1$
(b) Reciprocal of $2=\frac{1}{2}$
(c) Reciprocal of $\frac{1}{2}=\frac{1}{2}=2$
(d) Reciprocal of $0=\frac{1}{0}$

Hence 1 is the only avaiable option here.