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Q.

A set A  has 3 elements and another set B  has 6 elements. Then

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a

0≤n(A∪B)≤9

b

3≤n(A∪B)≤9

c

3≤n(A∪B)≤6

d

6≤n(A∪B)≤9

answer is C.

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Detailed Solution

n(A)=3 , n(B)=6

Maximum no. of elements in (A∪B)=9

Minimum no. of elements in (A∪B)=6

6≤n(A∪B)≤9

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