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mathmath333
 one year ago
counting question
mathmath333
 one year ago
counting question

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mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0In how man ways can 8 cars be arranged such that there are exactly 4 cars between 2 specified cars.

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440017302219:dw

phi
 one year ago
Best ResponseYou've already chosen the best response.2are the "2 specified cars" fixed in those "parking spots"? are we parking 8 cars or 6 cars?

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0they are just fixed such that 4 cars are between them

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440017527636:dw this diadram can also be possible

phi
 one year ago
Best ResponseYou've already chosen the best response.2for each "2 car" situation, there are 6! ways to park the other cars. if we call the 2 cars A and B, there are 3 ways to park A and B with 4 spaces between them and if we swap them, another 3 so 6*6! ways

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0how did u get red six >\(\color{red}{6}*6!\)

phi
 one year ago
Best ResponseYou've already chosen the best response.2A _ _ _ _B_ _ _A_ _ _ _ B _ _ _ A _ _ _ _ B and then switch A and B for the other 3

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0can i count this one too B _ _A_ _ _ _ from right it has 4 distance

phi
 one year ago
Best ResponseYou've already chosen the best response.2you want exactly 4 cars between 2 specified cars.

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0oh so i cant count that

phi
 one year ago
Best ResponseYou've already chosen the best response.2no , that is exactly 2 cars between them, so it does not count

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440018099258:dw

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0i got confused with that , earlier where number where used instead of cars in some previuos question

phi
 one year ago
Best ResponseYou've already chosen the best response.2it can get confusing. people hate this stuff... it makes their heads hurt.
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