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Mathematics, 16.07.2019 00:30 eyeneedalife
Aschool bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students from the second grade travel in the bus. how many ways can the students be seated if all the first-grade students occupy the first 3 rows?
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Aschool bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students fr...
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