In a jar there are 3 golf balls and 2 ping pong balls. What is the probability of drawing at least one golf ball when drawing two consecutive balls randomly?\nOptions:\n(A) 1/4\n(B) 1/2\n(C) 3/5\n(D) 9/10\n(E) 16/20 Let's think first. Stream of consciousness:
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P(at least one gold ball) = 1 - P(no golf ball, so 2 ping pong balls) = 1- 2/5*1/4 = 9/10.
So, the answer is (D).
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