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Bunuel
A certain school has 50 students assigned randomly to 5 distinct classes, and each student is assigned to only one class. If the quantities of students in the 5 classes are consecutive numbers, what is the probability that a given student is in one of the two largest classes?

A. 48%

B. 46%

C. 42%

D. 38%

E. 34%

Since the average number of students per class is 50/5 = 10 and the the number of students in the 5 classes are consecutive numbers, then the number of students in the 5 classes are 8, 9, 10, 11 and 12. Thus, the probability that a given student is in one of the two largest classes is:

(11 + 12)/50 = 23/50 = 46/100 = 46%
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