SOLUTION: How many different four-digit numbers can be formed using the digits 0 through 9 if no digit can appear twice in a number?
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Question 769769: How many different four-digit numbers can be formed using the digits 0 through 9 if no digit can appear twice in a number?
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
Answer: P(10,4) = 5040
You can ask me more at: mthman@gmail.com
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