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#1 2017-10-09 00:45:50

Max90
Member
Registered: 2017-09-23
Posts: 1

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?

Last edited by Max90 (2017-10-31 14:55:02)

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#2 2017-10-09 08:12:17

zetafunc
Moderator
Registered: 2014-05-21
Posts: 2,131
Website

Re: Combination without repetition?

Hi Max90,

Welcome to the forum. Have you heard of the binomial distribution?

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