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SSC Sample Paper SSC CGL - Sample Paper-28

  • question_answer
    The average of 9 numbers is 30. The average of first 5 numbers is 25 and that of the last 3 number is 35, what is the 6th number?

    A) 20                                

    B) 30      

    C) 40        

    D) 50

    Correct Answer: C

    Solution :

    Total of 9 numbers \[=30\times 9\]     \[=270\] Total of first 5 numbers \[=5\times 25=125\] Total of last 3 numbers \[=35\times 3=105\] \[\therefore \] 6th number\[=270-125-105=40\]               


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