A student uses letters from the word "ASSESSMENT" and the numbers 1,2 and 3 to form passwords for a personal computer. The passwords must start with an 'E' and end in the number '1'. Each password is 6 alphanumeric digits.
(a) How many passwords can be formed?
(b) What is the probability of selecting a password that contains 6 alphanumeric letters form 'A','R','C','H','1','P','E','L' ?
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