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Question

Let A={1,2} and B={2,3,4}.
If B×B={(2,2),(2,3),(2,4),(3,2),(3,3),(3,4),(4,2),(4,3),(4,4)}.
Please enter 1 or else 0.

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Solution

Cartesian product of two sets is obtained by pairing each element of first set with each element of second set.
Hence, B×B={(2,2),(2,3),(2,4),(3,2),(3,3),(3,4),(4,2),(4,3),(4,4)}.

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