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|Posté le: Dim 29 Oct - 12:52 (2017) Sujet du message: Combination without repetition?
|A committee of 4 people is to be selected from 10 people. How many ways can this be done?
I presume this implies Combination WITHOUT repetition, and if so I got 210. The formula I used was n!/k!(n-k)!
Thus, 10*9*8*7/4*3*2 = 210
Now a follow up question is: If there are 5 men and 5 women, what is the probability there would be at least 1 woman?
How do I do this? What formula do I use?
I didn't find the right solution from the Internet.