Solve:
E E O
+ E O O

O E O E
Given that:
 The above alphanumeric equation uses each of the digits from 0 to 9 exactly once.
 O denotes an odd digit and E denotes an even digit. Zero is considered as an even digit.
 Each digit in the top row is greater than the digit immediately below it.
(In reply to
corrected and solved by Ady TZIDON)
Addition is still commutative. Your flipping the order of summands doesn't affect uniqueness or the lack of it.
Solutions are 423+675, 425+673, 623+475, 625+473, all summing to 1098.

Posted by xdog
on 20140423 11:00:18 