Give a quick stream of consciousness before answering the following question. There are 8 books in a shelf that consist of 2 paperback books and 6 hardback books. If 3 books are selected at random without replacement, how many different combinations are there that at least one paperback book is selected?\nOptions:\n(A) 36\n(B) 45\n(C) 50\n(D) 55\n(E) 60
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8C3 [Select any four] - 6C3 [Select all hard backs] = 36.
The answer: (A).
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