Suppose an automobile license plate must use two capital letters (A-Z) followed by four digits (0-9). How many different license plates are possible if repetition of letters and digits is allowed? if neither repetition of letters nor repetition of digits is allowed? if repetition of letters and digits is allowed, but the plate must end with the digit 7? a. b. C.

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A: Please comment down for any doubt. I hope my answer helps you.

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