If 1 + 12 + 123 + 1234 + 12345 + 123456 + 1234567 + 12345678 + 123456789 + 1234567890 + 12345678901 + 123456789012 is congruent to n modulo n, where 0 <= n < 9, what is the value of n?
If we look at just last numbers, they sum up to a even number, meaning the number is divisable by 2.
=^._.^=
