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My four numbers (Posted on 2016-02-24) Difficulty: 3 of 5
I have in mind 4 positive numbers, which I would like you to find.

Out of the set of 6 pair-wise products of those numbers I am going to omit one.

The remaining five are: 8,10,12,24,30.

See The Solution Submitted by Ady TZIDON    
Rating: 4.3333 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Just that | Comment 2 of 12 |
I think that Charlie's solution is unique. 
2*4
2*5
        2*6 
                 6*4 
                 6*5

Increasing or decreasing 2 implies the opposite for the 4, 5 values and that implies increasing or decreasing 6 (and vice versa), but then you miss the 2*6 product. Changing 2 and 6 with the same 2*6 product would mean increasing and at the same time decreasing the 4 and 5 values. 

Edited on February 24, 2016, 4:14 pm
  Posted by armando on 2016-02-24 16:04:01

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