Suppose two boys named Davis, three boys named Jones, and four boys named Smith are arranged at random in a row containing nine seats.

-How many arrangements can be made so that boys wearing the same name will stay together?

I think it's 3 nPr 3.

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- September 8th 2009, 01:00 PMChizumA question from my quiz today
Suppose two boys named Davis, three boys named Jones, and four boys named Smith are arranged at random in a row containing nine seats.

-How many arrangements can be made so that boys wearing the same name will stay together?

I think it's 3 nPr 3. - September 8th 2009, 01:29 PMPlato