0 Points: 0 = Homework: homework 5.5 Outside a home. there is a 5-key keypad numbered 1 through 5. The correct four-digit code will open the garage door. The numbers can be repeated in the code. (a) How many codes are possible? (b) What is the probability of entering the correct code on the rst try. assuming [hat the owner doesn't remember the code? _@-~~ (a) The number of possible codes is E]. (Type an integer or fraction. Simplify your answer.)