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How many different three-digit security codes are possible using the digits 1-5, if the second digit cannot be the same as the first, and third digit cannot be the same as the second?
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2 votes
How many different three-digit security codes are possible using the digits 1-5, if the second

digit cannot be the same as the first, and third digit cannot be the same as the second?

User Kanye
by
8.1k points

1 Answer

2 votes

Answer:

1-3-5

Explanation:

User Grodriguez
by
8.1k points
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