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Math

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In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 7?
8 5 10 3 #

  • Math -

    The blurred out number is 9.

  • Math -

    How I got the answer:

    8+5+10+3= 26

    Since there were 5 sets of numbers I did 35-26 (because 7 times 5 is 35) which is 9. So when you add them up, it would be :

    8+5+10+3+9= 35
    35/5 = 7

    Therefore, the answer is 9.

    Hope this helps!

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