Let and . Then the number of elements in is: | CGP Edu

Maths Set Theory and Relations All Topic Question for Revision Test Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Let and . Then the number of elements in is:

A

7

B

5

C

4

D

3

Text Solution

Verified by Experts

The correct answer is:

Case I: and
or
and or
or
Case II : and

and
No common solution exists.
Now,

Thus, contains 3 elements.

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