Find the greatest n digit number.


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Answer:

10n-1

Step by Step Explanation:
  1. Since, we know that the greatest 1 digit number is 9.
    Or, we can say that the greatest 1 digit number = 101 - 1 = 10 - 1 = 9
    = 10n-1
  2. Thus, the greatest n digit number = 10n-1

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