Asked by Diana
how many 4 character license plates are possible with 2 letters of the alphabet followed by 2 digits, it repetitions are allowed?
if repetitions are not allowed?
if repetitions are not allowed?
Answers
Answered by
MathMate
Assuming all 26 letters are used, there is a choice of 25 letters for the first character, 26 for the second, 10 for the third, and 9 for the fourth.
The total number is the product of the four numbers.
The total number is the product of the four numbers.
Answered by
MathMate
If repetitions are allowed, the choies are 26,26,10,10.
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