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A certain class has 6 girls and 5 boys. four of these students are to line up, with two girls on either end and two boys in between, how many such arrangements are possible?

 Feb 24, 2020
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The total arrangements are

 

Choose one of the  girls * Choose one of the  boys * Choose one of the remaining  boys * Choose one of the remaining  girls =  

 

C(6,1) * C(5,1) * C(4,1) * C(5,1)  =   6 * 5 *  4  * 5  =    600

 

 

cool cool cool

 Feb 24, 2020

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