A computer user has downloaded 18 songs using an online file-sharing program and wants to create a CD-R with 13 songs to use in

Question

A computer user has downloaded 18 songs using an online file-sharing program and wants to create a CD-R with 13 songs to use in his portable CD player. If the order that the songs are placed on the CD-R is not important to him, how many different CD-Rs could he make from the 18 songs available to him?

Kunduz · Accepted Answer

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