acertain company has 18 equally qualified applicants for 4 open positions. how many different groups of 4 applicants can be chosen by the company to fill the positions if the order of selections does not matter?
ans.3060
please explain
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Since order does not matter, 4 people can be chosen from 18 in:yvonne12 wrote:acertain company has 18 equally qualified applicants for 4 open positions. how many different groups of 4 applicants can be chosen by the company to fill the positions if the order of selections does not matter?
ans.3060
please explain
18C4 = 18!/(4! x 14!) = (18 x 17 x 16 x 15)/4! = (18 x 17 x 16 x 15)/(4 x 3 x 2) = 3 x 17 x 4 x 15 = 3,060 ways.
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