lolololbabe8516 lolololbabe8516
  • 14-08-2018
  • Mathematics
contestada

A disc jockey wants to select 4 songs from a new cd that contains 12 songs. How many ways can the disc jockey choose four songs?

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zjckbr
zjckbr zjckbr
  • 14-08-2018

I suppose a DJ wants to select 4 different songs, then there are: 12*11*10*9 = 11880 ways to choose them.

If the order of the songs he plays doesn't matter, there are: [tex] \frac{12 * 11 * 10 *9 }{4!} = 495 [/tex] ways to choose them.

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miklin101
miklin101 miklin101
  • 02-04-2019

Answer:

The answer is NOT 495 WAYS (for when choosing 5) !!!! The CORRECT answer is 792!!!!!

>>>495 may be the answer "when choosing (four)"

UPDATE: This is the answer for when "choosing FIVE" not FOUR.

Answer Link

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