Posted by **Steven** on Tuesday, February 5, 2013 at 12:36pm.

An instructor will choose 3 problems from a set of 7 containing 3 hard and 4 easy problems. If the selection is made at random, what is the probability that only the hard problems are chosen?

- Statistics-Probability -
**Steve**, Tuesday, February 5, 2013 at 2:41pm
3/7 * 2/6 * 1/5 = 1/35

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