February 23, 2017

Homework Help: Math

Posted by -Z on Thursday, April 15, 2010 at 9:17pm.

Diane has one stamp of each positive integer value 1 cent through 9 cents, inclusive. She wants to put 10 cents worth of postage in a row across the top of an envelope. If arrangements of the same stamps in different order are considered different, how many arrangements are possible?

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