Combine all of This.
Probability
Level
1
In how many ways can a basketball team with 9 members can be chosen from 12 players?
Note: that the formula of Combination is nCr = n!/r!(n-r)!
The answer is 220.
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1 solution
using the formula of combinations, we have no. of ways= 12! / 9! * (12-9)!
=12!/ 9!*3!
=12* 11* 10/ 6
=220