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Maths Puzzle
What is the probability that 6 favorite songs will be played together out of 30 songs, if all 30 are listened to?
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- If all the favorite songs are to be played as a group there are a total of 24 (other songs) plus 1(favorite songs group), so these 25 items can be arranged in 25! ways
The 6 favorite songs can be arranged in 6! ways, so a total of 25! * 6! ways
All he songs can be arranged in 30! ways
Required probability is 26! * 6! / 30! = /1827
Answer is 2/1827 - 11 years agoHelpfull: Yes(2) No(0)
- 6factorial/30factorial
- 11 years agoHelpfull: Yes(0) No(1)
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