Free Practice Question
PS · Problem Solving
705-805
Combinations
In how many ways can a four-letter password be chosen, using the letters A, B, C, D, E, and/or F, such that at least one letter is repeated within the password?
Answer Choices
Sign in to reveal the correct answerA
720
B
864
C
900
D
936
E
1,296
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Explanation
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Difficulty
705-805
Type
PS
Category