jayrobinson258
jayrobinson258 jayrobinson258
  • 21-08-2017
  • Mathematics
contestada

I need help
Please help

I need help Please help class=

Respuesta :

betharowan betharowan
  • 21-08-2017
You could use your calculator or use the formula of nCr =n!/r!(n-r)! 15!/3!(15-r)! to get 455. 
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