SOLUTION: A service technician is given a list of 5 customers (A, B, C, D, E) that he must visit that day. He knows from experience that he can only service 3 customers by noon. How many d

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Question 914317: A service technician is given a list of 5 customers (A, B, C, D, E) that he must visit that day. He knows from experience that he can only service 3 customers by noon. How many different groups of three customers can he chose from to be serviced by noon? (Group ABC and group BCA are considered the same since the same three persons will be provided service).
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