jjonesp8qdu0 jjonesp8qdu0
  • 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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