bump
1. 4
2. 2178
- the number should be between 1000 and 2500, but 'a' cannot be 1 because 'd' cannot be 1, so 'a' is 2. 'd' should be 3 or 8, but as it should be even, 'd' is 8. 'b' cannot be 0 (number ending with 02 cannot be divisible by 4) , 2 (cannot repeat) or 4 (number ending with...