Question

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

a. 0

b. 2

c. 1/2

d. 1

Answer 1

d. 1

Explanation:

Reciprocal of X is 1/X

1 = 1/1

1 = 1

Answer 2

d

Explanation:

the reciprocal of any number n is 1/n

only d has the same reciprocal as 1 = 1/1