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Question

For any two sets A and B, If P(A)=P(B),Show thatA=B

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Solution

P(A) is the power set of A and P(B) is the power set of B. Since it is given that P(A)=P(B), then, this means the power sets of A and B are equal, this implies that the subsets of two sets A and B are equal.

Therefore , A and B should contain the same elements.

A=B.

Hence proved.


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