SOLUTION: show all work.....................
a disc jockey has 7 songs to play. five are slow songs, and two are fast songs. each song is to be played only once. in how many ways can the
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-> SOLUTION: show all work.....................
a disc jockey has 7 songs to play. five are slow songs, and two are fast songs. each song is to be played only once. in how many ways can the
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Question 384654: show all work.....................
a disc jockey has 7 songs to play. five are slow songs, and two are fast songs. each song is to be played only once. in how many ways can the disc jockey play 7 songs if
the song can be played in any oder
the first song must be a slow song and the last song must be a slow song
the first two songs must be fast songs Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! 2 fast and 5 slow songs.
a)7!=5040 ways
.
b)
5P2=20 Permutations of the 1st and last
5!=120 permutation of the middle 5.
20*5!=2400 ways
.
c) 2*5!=240 ways.
.
Ed
