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If the mean of 3, 5, 8, k, 14 and 17 is 11, what is the value of k



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  • The mean of a set of numbers is the sum of total numbers/number of the terms.
    In this case the number of all the terms including k and excluding 11, is 6. The sum of all the items is 47+k. The mean is: 47+k/6=11.
    When you cross multiply, you should have k=66-47 which is 19.

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