Multiple Choice Questions on The mean of 5 numbers is 15 If one more number is included the mean of the 6 numbers becomes 17 What........... for CDS Exam Preparation

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Multiple Choice Questions

The mean of 5 numbers is 15 If one more number is included the mean of the 6 numbers becomes 17 What...........

Quantitative Aptitude (CDS) Average
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    The mean of 5 numbers is 15. If one more number is included, the mean of the 6 numbers becomes 17. What is the included number?

    24

    Incorrect Answer

    25

    Incorrect Answer

    26

    Incorrect Answer

    27

    Correct Answer
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    Explanation:

    number including=old average+current no*increment in average
    n=15+2*6=15+12=27

    By: Munesh Kumari
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