Question

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

Answer 1

9C3 =9!/((9-3)!3!) =84 ways

Answer 2

Answer: 84

Explanation:

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

`^nC_x=\dfra{n!}{{!(n-x)!}`

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

`^9C_3=(9!)/(3!(9-3)!)=(9*8*7*6!)/(6*6!)=84`

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