Problem 6. (20%) Suppose that the password for your CWEM account has at least 6 characters, but not more than 8 characters. Each character in the password is a lower case English letter, or upper case English letter, or a special character selected as . or * or or /. (a) (10%) Determine the number of possible passwords available for CWEM. (b) (10%) Suppose that you want to create a CWEM password of length 6. In addition to the requirements listed in the beginning of the problem, the password must contain exactly one upper case English letter, and exactly one special character; and therefore the rest must be lower case English character. How many passwords are there which satisfy all the requirements