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Question

If A={1,2}and B={3,4} how many subsets will A×B

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Solution

Given, A={1,2,}B={3,4}

A×B={1,2}×{3,4}

A×B={1,3},{1,4},{2,3},{2,4}

Hence , the total number of subsets

A×B=24=16


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