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Product equals sum (Posted on 2016-01-17) Difficulty: 4 of 5
Let's start with an easy problem : What three positive integers have a sum equal to their product?
answer: (1,2,3), of course.

This puzzle can easily be transformed into a D4 problem:

For what values of k will the question "What k positive integers have a sum equal to their product?" have only one unique set of integers for an answer?
Clearly for k=2 the answer is unique: (2,2) and so it is for k=4: (1,1,2,4).

List all other values of k below 1000.

No Solution Yet Submitted by Ady TZIDON    
Rating: 2.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re(2): A continuationbroll2016-01-18 11:03:48
Solutionre: A continuationBrian Smith2016-01-18 10:47:17
A continuationSteve Herman2016-01-18 07:33:14
Some Thoughtsre: some solutionsAdy TZIDON2016-01-17 15:38:47
Some ThoughtsA startSteve Herman2016-01-17 13:21:10
some solutionsDej Mar2016-01-17 11:04:37
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