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Vijay posted an Question
October 06, 2020 • 23:15 pm 30 points
  • IIT JAM
  • Mathematics (MA)

Let a andb be two finite sets with m and n elements respectively. then number of elements in a x b is m+ (6) m x " (c) m/n (d) none of these. a)

Let A andB be two finite sets with m and n elements respectively. Then number of elements in A x B is m+ (6) m x " (C) m/n (d) None of these. a)

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    Deepak singh 1 Best Answer

    in first question ., since N is countable. So N×N is countable( because countable union of countable set is countable) . So option c is incorrect. and in next question. cardinality of A×B is n×m . So option b is correct.

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