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13 October, 09:38

A professor let's his students pick 3 out of 8 assignments to complete. How many combinations of the 3 assignments are possible

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  1. 13 October, 09:58
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    It is indeed justifiable that the operation involved in this task is combination because the arrangement of the assignments are not important. The combination may be solved directly from a scientific calculator using the function,

    nCr

    where in this item the value of n is 8 and that of r is 3. Substituting and solving the combination,

    8C3 = 56

    Therefore, there are exactly 56 combinations possible.
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