jayrobinson258
jayrobinson258 jayrobinson258
  • 21-08-2017
  • Mathematics
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musiclover10045
musiclover10045 musiclover10045
  • 21-08-2017

C(15,3) =15!(3!(15−3)!)  =15!(3!(15−3)!)

= \{15!}{( 3! (15 - 3)! )} = 455


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