The serial number on a new twenty-dollar bill consists of two letters followed by eight digits and then a letter. How many different serial numbers are possible given the following conditions? a. Letters and digits cannot be repeated. b. Letters and digits can be repeated. c. The first and last letters are repeatable vowels, the second letter is a consonant, and the digits can be repeated.
The serial number on a new twenty-dollar bill consists of two letters followed by eight digits and then a letter. How many different serial numbers are possible given the following conditions? a. Letters and digits cannot be repeated. b. Letters and digits can be repeated. c. The first and last letters are repeatable vowels, the second letter is a consonant, and the digits can be repeated.
Solution Summary: The author explains that the number of serial numbers possible is 28304640000.
The serial number on a new twenty-dollar bill consists of two letters followed by eight digits and then a letter. How many different serial numbers are possible given the following conditions?
a. Letters and digits cannot be repeated.
b. Letters and digits can be repeated.
c. The first and last letters are repeatable vowels, the second letter is a consonant, and the digits can be repeated.
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