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14-05-2018
Mathematics

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On a skiing trip there are five people but only three pairs of skis how many different groups of three could ski

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MsEHolt MsEHolt

26-05-2018

10 different groups can ski.

This is a combination of 5 items taken 3 at a time:
[tex]_5C_3=\frac{5!}{3!(5-3)!}=\frac{5!}{3!2!}=\frac{120}{12}=10[/tex]

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