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Nondivisibility by 11 (Posted on 2017-08-06) Difficulty: 2 of 5
The number 545 has the curious property that — after replacing any single digit by another arbitrary digit (from 0 to 9; it can be a leading 0 or just the same digit) — the result is not divisible by 11.

Is there a positive integer with this property having an even number of digits?

No Solution Yet Submitted by Danish Ahmed Khan    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionSolutionBrian Smith2017-08-06 09:48:33
SolutionSolution and moreJer2017-08-06 09:24:22
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