SOLUTION: can you please help me? show all work, a disk jockey has 9 songs to play. 5 are slow, and 4 are fast. each song is to be played only once. in how many ways can the disc jockey pl

Question 490296: can you please help me?
show all work, a disk jockey has 9 songs to play. 5 are slow, and 4 are fast. each song is to be played only once. in how many ways can the disc jockey play the 9 songs if:
-the songs can be played in any order
- the first two songs must be fast
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a disk jockey has 9 songs to play. 5 are slow, and 4 are fast. each song is to be played only once.
------------------------------
In how many ways can the disc jockey play the 9 songs if:
-the songs can be played in any order
Ans: 9! = 362,880 ways
===================================
- the first two songs must be fast
4C2 = 6 ways to select 2 fast songs
2 ways to order the 2 fast songs selected
7! ways to arrange the remaining 7 songs
Ans: 6*2*7! = 60,480 ways
===================================
Cheers,
Stan H.
RELATED QUESTIONS
Show all work. A disc jockey has 7 songs to play. 5 are slow songs, and 2 are fast songs. (answered by stanbon)

5. Show all work. A disc jockey has 10 songs to play. Seven are slow songs, and three are (answered by Alan3354)

5. Show all work. A disc jockey has 12 songs to play. Seven are slow songs, and five are... (answered by allig,lstoney)

I find this question to be very confusing. Can someone please help with it? Thank you (answered by solver91311)

show all work..................... a disc jockey has 7 songs to play. five are slow... (answered by edjones)

Show all work. A disc jockey has 7 songs to play. Three are slow songs, and four are fast (answered by stanbon)

Show all work. A disc jockey has 11 songs to play. Eight are slow songs, and three are... (answered by stanbon)

A disc jockey has 10 songs to play. Four are slow songs, and six are fast songs. Each... (answered by sudhanshu_kmr)

Hello Can someone please help me with this problem. I really do not understand how to do... (answered by Alan3354)