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At a small grocery store, there are 13 employees: 5 who stock shelves and 8 cashiers. From thee 13 employees, a group of 4 employees

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At a small grocery store, there are 13 employees: 5 who stock shelves and 8 cashiers. From thee 13 employees, a group of 4 employees needs to be selected to fill out a survey. (a) How many selections are possible? (b) How many selections with at least 2 cashiers are possible? (c) Suppose one employee has to be appointed to collect the surveys. Then, how many selections are possible

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