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Digital Sum 11 (Posted on 2008-12-08) Difficulty: 3 of 5
Two consecutive numbers both have a digital sum which is a multiple of 11. What is the smallest pair of numbers?

Note: the digital sum is the number equalling the sum of all the digits of the number. For example the digital sum of 123456 is 21.

See The Solution Submitted by Brian Smith    
Rating: 2.0000 (3 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionPuzzle SolutionK Sengupta2009-01-28 11:41:28
Solutionbrute force solutionMoira2009-01-21 22:58:24
AnswerK Sengupta2009-01-05 13:48:55
SolutionsolutionCharlie2008-12-08 14:09:27
SolutionAn educated guess (spoiler?)Steve Herman2008-12-08 13:28:13
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