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1 vote
How many different passcodes can be formed with the letters A,B,C,D

User Spersico
by
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1 Answer

5 votes

Explanation:

Assuming there are only 4 places in the code:

If you can repeat 4 x 4 x 4 x 4 = 256

if yo can use each letter only once 4 x 3 x 2 x1 = 24

User Vordreller
by
7.5k points
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