If A and B are two sets such that n(A)=7...

If `A` and `B` are two sets such that `n(A)=70 ,\ n(B)=60 ,\ n(AuuB)=110 ,\ then\ n(AnnB)` is equal to `240` b. `50` c. `40` d. 20

A

`240`

B

`50`

C

`40`

D

`20`

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The correct Answer is:

D

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