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Matching pairs (Posted on 2015-07-24) Difficulty: 3 of 5
(7,13); (73,137); (41,271);

Both members of each of the above sets share a certain unique feature.

What feature ?

  Submitted by Ady TZIDON    
Rating: 5.0000 (1 votes)
Solution: (Hide)
Both reciprocals of the matched numbers, when written as a decimal fraction have periods of the same length.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionSolutionMath Man2015-07-24 14:32:07
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