Compare and contrast the following urban heat islands : baltimore, md; richmond, virginia and boston, ma include the physical surrounds (water, land, vegetation, mountains, plains, etc.) include population counts and spread include city layout (city parks, "green" areas and initiatives)

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 %.