Question

a) How many total unique passwords can be created in this way if the digits and letters as described cannot be repeated? Show your work. b) How many total unique passwords can be created if the first digit must be a 0 or 1, the last letter must be an A, B, or C, and if digits and letters are allowed to be repeated in the other spots? Show your work.

Answer 1

a) The digits and letters of the pasword can not be repeated, then, to determine the number of uniques passwords you use the following formula: