Multiple Choice Questions on The average height of 15 students is calculated as 75 But later it was found that the height of 1 st........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The average height of 15 students is calculated as 75 But later it was found that the height of 1 st...........

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    The average height of 15 students is calculated as 75. But later it was found that the height of 1 student wrongly entered as 35 instead of 38 and another as 46 instead of 63.The correct average is:

    71

    Incorrect Answer

    73

    Incorrect Answer

    75

    Incorrect Answer

    76

    Correct Answer
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    Explanation:

    {(15*75)-(35+46)+(38+63)} / 15

    = (1125 – 81 + 101) / 15
    = 1145/15 = 76.33 = 76

    By: Sandeep Dubey
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