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A number well defined (Posted on 2018-10-25) Difficulty: 3 of 5
Half of my 2-digit number N is also a 2-digit number,
one of its digit being the sum of N's digit, the other their difference.
All 4 digits are different.

Find my number.

No Solution Yet Submitted by Ady TZIDON    
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Hints/Tips re: Too much information | Comment 4 of 5 |
(In reply to Too much information by Steve Herman)

.... the fact that all 4 digits are different is not needed to solve the problem. 

I  agree


 algebraic ...   /...there is only one solution....
Not so:
6,8     fits the equation as well, but does not meet other requirements e.g.   one-digit sum

  Posted by Ady TZIDON on 2018-10-27 11:34:42
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