Related questions with answers
A software development department consists of 6 women and 4 men. (A) How many ways can the department select a chief programmer, a backup programmer, and a programming librarian? (B) How many of the selections in part (A) consist entirely of women? (C) How many ways can the department select a team of 3 programmers to work on a particular project?
Solution
VerifiedAs order of selection is relevant, therefore selection is a permutation.
Number of ways to select a chief programmer, a backup programmer, and a programming librarian is:
As order of selection is relevant, therefore selection is a permutation.
Number of ways to select only women as a chief programmer, a backup programmer, and a programming librarian is:
As order of selection is irrelevant, therefore selection is a combination.
Number of ways to select 3 programmers is:
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