Question

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Example:
Find A and B in the addition of:
A
The sum of 3 A's must be a number whose ones digit is A
A
This happens only for A = 0 and A = 5
+ A
If A = 0 which makes B = 0
BA
Therefore, the puzzle is solved as taking A = 5
5
5
+ 5
That is A=5 and B = 1
15​

Answer 1

I don't think that's a question