Question 983946: In a singing contest there are 6 finalists: Ari, Bella, Calli, Della, Ella, and
Fits. What is the probability that Ari will perform immedietly before Bella ?
(Express answer as a fraction in lowest terms)
Answer by Edwin McCravy(20060)   (Show Source):
You can put this solution on YOUR website! In a singing contest there are 6 finalists: Ari, Bella, Calli, Della, Ella, and
Fits. What is the probability that Ari will perform immedietly before Bella ?
(Express answer as a fraction in lowest terms)
The number of arrangements of these six things
{A,B,C,D,E,F}
is 6!.
The number of arrangements of these five things
{(AB),C,D,E,F}, where A is immediately before B
is 5!
So the probability is 5! out of 6! or 
Edwin
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