Math 157

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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?

• Math 157 -

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

• Math 157 -

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

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