SOLUTION: How many four-letter codes can be formed using the letters A, B, C, D, E, and F? Repeated letters are allowed.
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-> SOLUTION: How many four-letter codes can be formed using the letters A, B, C, D, E, and F? Repeated letters are allowed.
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Question 279948: How many four-letter codes can be formed using the letters A, B, C, D, E, and F? Repeated letters are allowed. Answer by Alan3354(69443) (Show Source):
