keebler01
Show all work. A disc jockey has 10 songs to play. Seven are slow songs, and three are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 10 songs if
The songs can be played in any order.
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.
Delete
Share
This Question is Closed
anonymous
Best Response
You've already chosen the best response.
0
any order 10!
anonymous
Best Response
You've already chosen the best response.
0
oops i had slow and fast backwards.
keebler01
Best Response
You've already chosen the best response.
0
huh!
anonymous
Best Response
You've already chosen the best response.
0
i screwed up on #2 not i have to think.
anonymous
Best Response
You've already chosen the best response.
0
zarkon?
anonymous
Best Response
You've already chosen the best response.
0
7 for the first, 6 for the last, and 8*7*6*5*4*3 for the middle so i think it is
7*6/8*7*6*5*4*3
xChessMachinex
Best Response
You've already chosen the best response.
0
How can the first song be both fast and slow?
anonymous
Best Response
You've already chosen the best response.
0
first two slow
3*2 then 8*7*6*5*4*3
Zarkon
Best Response
You've already chosen the best response.
1
is there a reason you are dropping the 2?
Zarkon
Best Response
You've already chosen the best response.
1
\[10!\]
\[_7P_2\cdot 8!\]
\[_3P_2\cdot 8!\]
keebler01
Best Response
You've already chosen the best response.
0
i have no clue what yall are doing please explain!
Zarkon
Best Response
You've already chosen the best response.
1
\[_7P_2=7\times 6\]
\[_3P_2=3\times 2\]
Zarkon
Best Response
You've already chosen the best response.
1
1) 3628800
2) 1693440
3) 241920
anonymous
Best Response
You've already chosen the best response.
0
ok so it was right yes? i mean what i wrote
anonymous
Best Response
You've already chosen the best response.
0
oh no it was wrong. i didn't put the 2 at the end. doh
anonymous
Best Response
You've already chosen the best response.
0
first two slow 3*2 then 8*7*6*5*4*3*2
so
3*2*8*7*6*5*4*3*2
anonymous
Best Response
You've already chosen the best response.
0
i would like to think that was a typo
Zarkon
Best Response
You've already chosen the best response.
1
I would too
anonymous
Best Response
You've already chosen the best response.
0
lol!