For this item, any answers that are not whole numbers should be entered as a decimal, rounded to the tenths place.
brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number.
the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.