Five racers in a competition . No tie. How many possibilites A is ahead of B?
A 24
B 30
C 60
D 90
E 120
A 24
B 30
C 60
D 90
E 120
5 racers => 5! ways total = 120
since there are no ties => either A has to be ahead of B, or B has to be ahead of A.
120/60=60 ways.
EDIT:
meant to say 120/2=60 ways
