Give a quick stream of consciousness before answering the following question. There are 8 books in a shelf that consist of 3 paperback books and 5 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) 40\n(B) 46\n(C) 50\n(D) 55\n(E) 60
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8C3 [Select any four] -5C3 [Select all hard backs] = 46
The answer: (B).
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