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There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks. how many possible selections of 4 books from this shelf include at least one paperback?
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There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks. how many possible selections of 4 books from this shelf include at least one paperback?

User Hager
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User Sergiu Todirascu
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