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posted by Rena on Wednesday, January 5, 2011 at 10:18am.

A group of 10 students consists of 3 girls and 7 boys. How many ways can the students be arranged from left to right if the first 3 students are girls and the remaining students are all boys?

How many ways can the girls be arranged? 3! how many ways can the boys be arranged? 7! so 3!*7! big number 6*5040 = 30,240

no the girls can be arranged 9 different ways and the boys can be arranged 49 different ways

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