JEE Main & Advanced Mathematics Sets Question Bank Set theory

  • question_answer
    If \[A=\{1,\,2,\,3,\,4\}\]; \[B=\{a,\,b\}\] and f is a mapping such that \[f:A\to B\], then \[A\times B\] is [DCE 2005]

    A) {(a, 1), (3, b)}

    B) {(a, 2), (4, b)}

    C) {(1, a), (1, b), (2, a), (2, b), (3, a), (3, b), (4, a), (4, b)}

    D) None of these

    Correct Answer: C

    Solution :

    It is obvious.


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