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The letters A, B, C, and D are used to form four-letter passwords for entering a computer le. How many passwords are possible if letters can be repeated?
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12 votes
The letters A, B, C, and D are used to form four-letter passwords for entering a computer

le. How many passwords are possible if letters can be repeated?

User EpicAdv
by
5.0k points

1 Answer

11 votes

Explanation:

4 positions with 4 possibilities each :

4×4×4×4 = 4⁴ = 256 different possible passwords.

User PandaNL
by
5.1k points
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