SOLUTION: There are 6 people running the 100 meter dash. How many different orders can the runners finish?
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Question 275509: There are 6 people running the 100 meter dash. How many different orders can the runners finish?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
6! = 6*5*4*3*2*1 = 720 possible ways.
assume it was only 3 people.
that would be 3! = 3*2*1 = 6
let the people be abc.
order of finish possible would be:
abc
acb
bac
bca
cab
cba
this is called a permutation because order is important.
assume it was 4 people.
number of ways would be 4! = 4*3*2*1 = 24
possible ways get a lot bigger after 4.
assume the people were abcd
possible ways would be:
abcd
abdc
acbd
acdb
adbc
adcb
bacd
badc
bcad
bcda
bdac
bdca
cabd
cadb
cbad
cbda
cdab
cdba
dabc
dacb
dbac
dbca
dcab
dcba
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