In a class of 15 students: (a) How many ways can a committee of 3 students be formed? (b) If there are 3 specific leadership roles (president, vice-president, secretary) to be filled from the class, how many ways can these roles be assigned?
Added by Lisa B.
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This is calculated as 15C3 = 15! / (3!(15-3)!) = 455 ways. Show more…
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