5.A pass word consists of one letters followed by a six digit number. (a)How many passwords are poss

5.A pass word consists of one letters followed by a six digit number.
(a)How many passwords are possible if there are no restrictions?
(b)How many passwords are possible if none of the letters or digits can be repeated?
(c)What is the probability of guessing the password in one trial if there are no restrictions
4.Evaluate the given expression and express the result using the usual format for writing numbers (instead of scientific notation). 33C2

 

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