jaypao18
jaypao18 jaypao18
  • 12-05-2017
  • Mathematics
contestada

3 bananas are to be selected from a group of 9. In how many ways can this be done?

Respuesta :

JeninM
JeninM JeninM
  • 12-05-2017
9C3 =9!/((9-3)!3!) =84 ways
Answer Link
JeanaShupp
JeanaShupp JeanaShupp
  • 10-05-2019

Answer: 84

Step-by-step explanation:

The formula to calculate the number of ways to select x things from n things is given by :-

[tex]^nC_x=\dfra{n!}{{!(n-x)!}[/tex]

Now, if 3 bananas are to be selected from a group of 9, then the number of ways  will be  

[tex]^9C_3=\dfrac{9!}{3!(9-3)!}=\dfrac{9\times8\times7\times6!}{6\times6!}=84[/tex]

Hence, the  number of ways to select 3 bananas from a group of 9 =84

Answer Link

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