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January 25, 2015

January 25, 2015

Posted by **Tifini** on Monday, July 16, 2012 at 12:16pm.

A. 26*25*24+10*9*8

B. 26^3+10^3

C. 26^3*10^3

D.26*25*24*10*9*8

- Permutations -
**MathMate**, Tuesday, July 17, 2012 at 10:40pmEach of the first three characters is 26 choices each (repetition permitted).

Each of the following digits has 10 choices (numbers can be repeated).

Total number of distinct passwords is the product of all these number of choices.

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