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a cube = s.o.d . (Posted on 2017-06-15) Difficulty: 3 of 5
I've found a four-digit number ABCD such that
ABCD=(A+B+C+D)3

What is it ?

Is it unique?

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts re: Paper & Pencil solution (spoiler) | Comment 2 of 3 |
(In reply to Paper & Pencil solution (spoiler) by Steve Herman)

Excellent reasoning!

You rate me  3, and I rate you 6!

 However, 512 is not a 4-digits number - no need to post disclaimers!
Both 17,18    as answers were known to me, however I've considered disclosing  the "neighboring"  feature  as counterproductive... 



















  Posted by Ady TZIDON on 2017-06-15 11:16:23
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