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On your bookshelf you have 8 math books, 1 0 novels, and 9 physics books. You pack for a long journey and pick 4 books

On your bookshelf you have

8

math books,

10

novels, and

9

physics books. You pack for a long journey and pick

4

books out at random.

What is the probability that all books are math books?

The probability that all books are math books is

.

What is the probability that exactly two of the books are math books?

The probability that exactly two of the books are math books is

.

What is the probability that none of the books are novels?

The probability of picking no novels is

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