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Using the digits 2, 3, 4, 7 and 8, Carlos will form five-digit positive integers. Only the digit 2 can be used more than once in any of Carlos’ five-digit integers. How many distinct fivedigit positive integers are possible?

 Jan 11, 2021
edited by Guest  Jan 11, 2021
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The same question is in the link https://web2.0calc.com/questions/help_10266 I think you should check it out Guest

 Jan 11, 2021
edited by hihihi  Jan 11, 2021
edited by hihihi  Jan 11, 2021

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