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22 March, 01:58

10 11 10 y 10 8

If the mean is 10 what number could y be?

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  1. 22 March, 02:26
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    To find the mean of a number sequence, add all the numbers together and divide them by the number of numbers used ...

    10 + 11 + 10 + 10 + 8 = 49

    49 : 5 = 9.8

    The mean does not match 10, so make up numbers untill it matches.

    10 + 11 + 10 + 10 + 8 + 6 : 6

    = 10!

    The anwser would be y = 6
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