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JEE Main & Advanced Mathematics Statistics Question Bank Mean

  • question_answer
    The mean of 5 numbers is 18. If one number is excluded, their mean becomes 16. Then the excluded number is           [Pb. CET 2001]

    A)                 18          

    B)                 25

    C)             26          

    D)                 30

    Correct Answer: C

    Solution :

               Sum of  total number = 18 × 5 = 90       After one number excluded       Sum of total number = 16 × 4 = 64             Then, excluded number is 90 ? 64 = 26.


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