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

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Manager
Joined: 25 Jan 2004
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The digits of n strictly increase from left to right. Find [#permalink]  01 Feb 2004, 02:13
The digits of n strictly increase from left to right. Find the sum of the digits of 9n.
Manager
Joined: 26 Dec 2003
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9, for any n , sum of the digits of 9n = 9
Director
Joined: 03 Jul 2003
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rakesh1239 wrote:
9, for any n , sum of the digits of 9n = 9

Simple yet need presence of mind
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