DarkAngel18 DarkAngel18

24-07-2016
Mathematics

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Determine the number of different groups of 4 questions a teacher could select from a set of 10 distinct questions.

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konrad509 konrad509

24-07-2016

[tex]\displaystyle \binom{10}{4}=\dfrac{10!}{4!6!}=\dfrac{7\cdot8\cdot9\cdot10}{2\cdot3\cdot4}=7\cdot3\cdot10=210[/tex]

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