Students in a college are allowed to chose their own passwords consisting of three (3) lower-case...

Students in a college are allowed to chose their own passwords consisting of three (3) lower-case letters, in that order. How many different passwords are possible if

a. repetitions allowed?

b. repetitions are not allowed?

c. The first character cannot be 0, with no repetitions are not allowed?

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Expert Solution

Colby Messinger answered 1 year ago

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