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Get the right product (Posted on 2015-12-01) Difficulty: 3 of 5
For a positive integer n > 2, consider the n-1 fractions 2/1; 3/2; ...; n/(n-1).

The product of these fractions equals n, but if you reciprocate (i.e. turn upside down) some of the fractions, the product will change.

How can you make the product equal 1?
Find all values of n for which this is possible.

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: Different solution (dumb error)Jer2015-12-02 14:05:17
Some ThoughtsPossible for 9Charlie2015-12-02 11:11:35
computer verification it doesn't work for n=9Charlie2015-12-02 10:52:59
SolutionDifferent solutionJer2015-12-02 07:18:54
SolutionsolutionPaul2015-12-01 17:56:12
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