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     EduGorilla 
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    Reading list for a class consists of 10 books, out of which 4 are non-fiction and the rest are fiction. Each student is required to read 4 books from the list, out of which at least 2 must be non-fiction. How many selections of 4 books satisfy the requirement?

    Options :-

    1. (4! x 10!)/3!
    2. 7!
    3. 6!
    4. 5! - 5
    5. 5!
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