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Let U be the universal set for sets...

Let `U` be the universal set for sets `A` and `B` such that `n(A) =200 ,n(B) =300 and n(A cap B)=100.` then `n(A'cap B')` is equal to `300,` provided that `n(U)` is equal to

A

`600`

B

`700`

C

`800`

D

`900`

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The correct Answer is:
B
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