If A and B are two nonempty sets having n elements in common, then A \

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Module 1: Sets, Relation and Function.

20192m

If $A$ and $B$ are two nonempty sets having $n$ elements in common, then $A \times B$ and $B \times A$ will have how many elements in common?
(i) $2^n$
(ii) $n^2$
(iii) $n^4$
(iv) $2n$

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