In a race where 18 cars are running, the chance that car X will win is 1/8, that Y will win is 1/12 and that Z will win is 1/6. Assuming that a dead heat is impossible, find the chance that one of them will win.  Choose one:
A) 1/140  B) 1/180  C) 3/12  D) 3/8  E) 57/120
Required probability = P(X) + P(Y) + P(Z) (all the events are mutually exclusive).   = 1/8 + 1/12 + 1/6   = 3/8   ANSWER:3/8
<result>D</result>
In a race where 18 cars are running, the chance that car X will win is 1/8, that Y will win is 1/12 and that Z will win is 1/6. Assuming that a dead heat is impossible, find the chance that one of them will win.