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7th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-15

  • question_answer
    If A and B are two finite sets such that \[n\,(A)=60,\]\[n\,(A\cup B)=140\] and \[n\,(A\cap B)=30,\] then find n (B1).

    A)  90                               

    B)  110

    C)  120                             

    D)  50

    E)  None of these

    Correct Answer: B

    Solution :

     Not Available


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