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28 January, 20:19

A special die has a number on each face. The sums of the opposite faces are all equal. Five of the numbers are 5,6,9,11, and 14. What number is on the sixth face?

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  1. 29 January, 00:06
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    The missing number is 15.

    Step-by-step explanation:

    The sum of the opposite faces is 20, because 14 + 6 = 20 and 11 + 9 = 20, so we just need to find the answer to the equation

    5 + x = 20

    Solving for x, we have

    x = 20-5

    x = 15.

    Therefore, the missing number is 15.
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