Multiple Choice Questions on The mean of 100 items is 51 It was discovered that three items which should have been 50 70 60 were ........... for SSC (MTS) Preparation

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Multiple Choice Questions

The mean of 100 items is 51 It was discovered that three items which should have been 50 70 60 were ...........

Quantitative Aptitude (MTS) Average
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    The mean of 100 items is 51. It was discovered that three items, which should have been 50, 70, 60, were wrongly read as 40,

    20, 50, respectively. The correct mean is:

    This questions was previously asked in
    SSC MTS 22nd October 2021 Shift-3
    View All SSCMTS Previous Year Papers

    52.3

    Incorrect Answer

    51.7

    Correct Answer

    48.6

    Incorrect Answer

    50.8

    Incorrect Answer
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    Explanation:

    Mean of 100 items = 51
    Sum of 100 items =
    Sum of the items added = 50 + 70 + 60 = 180
    Sum of the items replaced = 40 + 20 + 50 = 110
    New sum = 5100 - 110 + 180 = 5170
    Hence, Option B is correct. = 51.7

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