Home Maths Set Theory and Relations Set Theory Sets A and B have 3 and 6 elements respectiv…
Maths Set Theory and Relations Set Theory Single Correct MCQ
Published on: August 12, 2026

Sets A and B have 3 and 6 elements respectively. What can be the minimum number of elements in A ∪ ∪ B

A
3
B
6
C
9
D
18

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Text Solution

Verified by Experts
The correct answer is:
B

n(A ∪ ∪ B) = n(A) + n(B) – n(A ∩ ∩ B) =

Since maximum number of elements in

Minimum number of elements in .

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