kalamraf kalamraf

03-04-2018
Mathematics

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There are 5 books belonging to 5 students. The books were put into a box, and each student pulls out an book one after the other. What is the probability that each student gets his or her own book?

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Аноним Аноним

03-04-2018

Total books = 5
P (own book) = 1/5 x 1/4 x 1/3 x 1/2 x 1 = 1/120

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