Stores in Vegas

What is the probability that Martha will not fly to Las Vegas at all?

Martha is a flight attendant stationed in Denver. Her assignments are rotated randomly between flights to Dallas; Seattle; Portland; and Las Vegas. Consider a success being a trip to Las Vegas. What is the probability that Martha will not fly to Las Vegas at all?

Public Comments

1. 3/4
2. it depends on how many flights she works. if it is just one flight then there is a 3/4 probability of not going to Vegas if two flights then (3/4)^2 probability of not going to Vegas for n flights the probability of (3/4) ^ n