A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Five marbles are drawn from the bag. What is the approximate probability that exactly two of the five are blue?

There are 20 blue marbles and 30 non-blue marbles among 50 total. The probability of exactly two blue marbles is (C(20,2) × C(30,3)) / C(50,5) = (190 × 4,060) / 2,118,760 ≈ 0.364, or about 36 percent. So the correct choice is 36 percent.

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