A certain company has 4 open positions. 18 applicants. How many different groups of people can be chosen to fulfill the roles if order of election does not matter. Explanation pls.
A: 18
B: 72
C: 180
D: 1260
E: 3060
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umaa
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IMO E.Ogman05 wrote:A certain company has 4 open positions. 18 applicants. How many different groups of people can be chosen to fulfill the roles if order of election does not matter. Explanation pls.
A: 18
B: 72
C: 180
D: 1260
E: 3060
18C4 = 3060
OA?
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vineetbatra
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Is the answer E, it is a combination problwm where you have to choose 4 ppl out of 8.
So it is 18c4 i.e. 18!/(18-4)!*4! = 3060
So it is 18c4 i.e. 18!/(18-4)!*4! = 3060
