There are four students, all of different heights, who are to be randomly arranged in a line. What is the probability that the tallest student will be first in line and the shortest student will be last in line?
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You're kidding, right? Did you back up 12 chapters to find this problem?
Possible arrangements (without restrictions): 4*3*2*1 = 24
Possible arrangements (with restrictions): 1*2*1*1 = 2
What do you get?
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