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If U is the universal set with 100 eleme...

If U is the universal set with 100 elements, A and B are two sets such that n(A) = 50, n (B) = 60, `n(AnnB)` = 20 then `n(A'nnB')` =

A

40

B

90

C

20

D

10

Text Solution

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The correct Answer is:
D
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