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JEE Main & Advanced Mathematics Sets Question Bank Relations

  • question_answer
    Let R = {(1, 3), (2, 2), (3, 2)} and S = {(2, 1), (3, 2), (2, 3)} be two relations on set A = {1, 2, 3}. Then RoS =

    A) {(1, 3), (2, 2), (3, 2), (2, 1), (2, 3)}

    B) {(3, 2), (1, 3)}

    C) {(2, 3), (3, 2), (2, 2)}

    D) {(2, 3), (3, 2)}

    Correct Answer: C

    Solution :

    Here\[R=\{(1,\,3),\,(2,\,2);\,(3,\,2)\}\], \[S=\{(2,\,1);\,(3,\,2);\,(2,\,3)\}\] Then \[RoS=\{(2,\,3);\,(3,\,2);\,(2,2)\}\].


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