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  • 30-01-2015
  • Mathematics
Answered

how many two person can be picked out of a group of 7

Verified Answer :

konrad509
konrad509 konrad509
  • 30-01-2015

\({7 \choose 2}=\dfrac{7!}{2!5!}=\dfrac{6\cdot5}{2}=3\cdot5=15\)

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