GMAT Problem Solving
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Source: OG11th
Level: 4
A certain junior dass has 1,000 students and a certain senior dass has 800 students. Among these students, there are 60 sibling pairs, each consisting of 1 junior and 1 senior. If 1 student is to be selected at random from each class, what is the probability that the 2 students selected will be a sibling pair?
- A
- B
- C
- D
- E
