Question

Which of the following statements is true?

A

1 and -1 are reciprocal of themselves.

B

Zero has no reciprocal.

C

The product of the two middle rational numbers is a rational number.

D

All of these

Easy

Solution

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Correct option is
D

All of these

Option A
Reciprocal of a number is the number obtained by dividing it by
Here, reciprocal of and reciprocal of
Hence, they are both the reciprocals of themselves.

Option B
Reciprocal of can be denoted as which isn't defined. Anything divided by is not defined.

Option C
Addition, subtraction, multiplication or division of a rational number with another rational number always gives a rational number.

All the statements are correct.

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