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SSC Sample Paper Mock Test-16 SSC CGL Tear-II Paper-1

  • question_answer
    The mean of 50 numbers is 30. Later it was discovered that two entires were wrongly entered as 82 and 13 instead of 28 and 31. Find out the correct mean.

    A) 36.12

    B)  30.66

    C)  29.28

    D)  38.21

    Correct Answer: C

    Solution :

    The sum of 50 numbers\[=50\times 30=1500\] \[\therefore \]Correct mean \[=\frac{1500+28+31-82-13}{50}=\frac{1464}{50}=29.28\]


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