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Mathematics, 30.07.2019 19:10 gabrielolivas59
How many different three letter initials can a person have, if the first and last initial
cannot be the same?
*note: i'm pretty sure the answer looks something like 26! / i'm supposed to understand this using factorials. i don't understand how to get the denominator.
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Answers: 1
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How many different three letter initials can a person have, if the first and last initial
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