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02-04-2018
Mathematics

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You are choosing a CD from your friend’s music collection. You can choose 1 of 4 country CDs, 1 of 3 soul CDs, or 1 of 5 pop CDs. How many ways can you choose a CD?

10
12
48
60

Respuesta :

MsEHolt MsEHolt

11-04-2018

There are 12 ways you can choose a CD.

There are 12 total CDs to choose from, and you can only choose 1, so

[tex]_{12}C_1 = \frac{12!}{1!11!} = 12[/tex]

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