Triplets Adam, Bruce, and Charlie enter a triathlon. If there are

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Triplets Adam, Bruce, and Charlie enter a triathlon. If there are 9 competitors in the triathlon, and medals are awarded for first, second, and third place, what is the probability that at least two of the triplets will win a medal?

A. 3/14
B. 19/84
C. 11/42
D. 15/28
E. 3/4

Answer: B
Source: Princeton Review
Source: — Problem Solving |