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If P = {1,2,3,"…….",256} , two of its su...

If `P = {1,2,3,"…….",256}` , two of its subsets are A and B. A is the set of all multiples of 3 and B is the set of all multiples of 4. Find `n(A nn B)`.

A

21

B

20

C

22

D

19

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The correct Answer is:
A
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