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Multiplying gets a square? (Posted on 2004-06-26) Difficulty: 3 of 5
Is it possible to get a perfect square if you multiply three consecutive natural numbers?

See The Solution Submitted by Federico Kereki    
Rating: 3.0000 (5 votes)

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Some Thoughts re: Solution | Comment 5 of 25 |
(In reply to Solution by Penny)

Taking 999799 * 999800 * 999801 = (999700015)^2, the left hand side ends in 0, while the right hand side ends in 5, so the two cannot be equal.  Similary for the other results.  I think you are running up against the limits of accuracy for doubles.
  Posted by Nick Hobson on 2004-06-26 13:16:42

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