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The digits of n strictly increase from left to right. Find

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The digits of n strictly increase from left to right. Find [#permalink] New post 01 Feb 2004, 03:13
The digits of n strictly increase from left to right. Find the sum of the digits of 9n.
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 [#permalink] New post 01 Feb 2004, 05:06
9, for any n , sum of the digits of 9n = 9
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 [#permalink] New post 01 Feb 2004, 07:08
rakesh1239 wrote:
9, for any n , sum of the digits of 9n = 9


Simple yet need presence of mind :lol:
  [#permalink] 01 Feb 2004, 07:08
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The digits of n strictly increase from left to right. Find

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