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A progressive addition (Posted on 2014-05-19) Difficulty: 3 of 5
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In the above addition all the digits were replaced by "#".
Please restore the original numbers, given that in each column the digits form a valid arithmetic progression.

Based upon a puzzle by Polish mathematician Marek Penshko.

See The Solution Submitted by Ady TZIDON    
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Solution Trial & Error | Comment 1 of 3

After finally realizing that arithmetic progressions can go 'backwards', a lot of trial and error yielded the following addends:





  Posted by Bryan on 2014-05-19 13:01:37
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