Here is a square sequence of numbers.
392?
6 3
7 4
?817
What are the two question marks?
(In reply to
Possible solution??? by fwaff)
I like fwaff's solution... I came to the same solution in a different way:
3926
6__3
7__4
4817
Same logic to get the difference of 2 (so that the columns and rows add up), but my thought was... these are the only two numbers I could find to avoid REPEATING the same number in a column or row.