Suppose that a password for a computer system must haveat least 8, but no more than 12 characters, where eachcharacter in the password is a lowercase English letter,an uppercase English letter, a digit, or one of the six specialcharacters ∗, >, <, !, +, and =. a) How many different passwords are available for thiscomputer system? b) How many of these passwords contain at least one occurrenceof at least one of the six special characters?

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Q: For some particular website, the password must start with one of the letters A, B, or C. Then there…

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Q: how many passwords are there if you do not allow repeating digits? b.) How many passwords are there…

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Q: n(ANB) = 8, n(ANBNC) = 4, n(Bnc) = 9, n(B - A) = 11, n(BUC) = 28, n(AnC) = 7, n(AUBUC) = 31. Find,…

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Q: Your password in your company's ERP (Enterprise Resource Planning) System requires exactly eight…

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Q: How many strong passwords are there?

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Q: How many different four letter secret codes can be formed if the first letter must be an S or a T ?

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Q: How many 6-letter passwords can be made using the letters A through Z if... a) Repetition of letters…

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Q: Suppose a password must have at least 8 characters, but no more than 12 characters, made up of…

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Q: A certain website wants you to build a 6-character password from the letters a through i, the…

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Q: The company has agreed on an 8 character password format, comprised of upper case letters , lower…

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Q: Each character in a password is either a digit [0-9] or lowercase letter [a-z]. How many valid…

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Q: Each user on a computer system has a password, which is seven to nine aracters long, where each…

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Q: Japanese license plates in each state consist of 8 characters. The first two characters can be any…

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Q: The design of a communication system considered the following questions: (a) How many three-digit…

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