Question: Let X, Y , and Z be sets. Prove or disprove the following statement. If X 6= Y then X Z 6= Y Z. Let

Let X, Y , and Z be sets. Prove or disprove the following statement. If X 6= Y then X Z 6= Y Z.

Let X, Y be sets. Prove or disprove the following statement. P(X Y ) = P(X) P(Y ).

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