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JEE Main & Advanced Mathematics Functions Question Bank Self Evaluation Test - Relations and Functions-I

  • question_answer
    The Cartesian product of two sets P and Q i.e., \[P\times Q=\phi ,\] if

    A) either P or Q is the null set

    B) neither P nor Q is the null set

    C) Both (a) and (b)

    D) None of these

    Correct Answer: A

    Solution :

    [a] If either P or Q is the null set, then \[P\times Q\] will be an empty set, i.e., \[P\times Q=\phi \],


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