Number of possible passwords = 26*10*10 = 2600
so p = 1/2600
not p = 1 - p
1. Arabella's password consists of one letter followed by 2 digits. What is the probability of correctly guessing arabella's password?
2. If the probability of an event happening is p, what is an algebraic expression that represents the probability that the event does not happen?
1 answer
2 answers