Thanks for the participation!

1744A - Number Replacement was authored and prepared by 74TrAkToR

1744B - Even-Odd Increments was authored by dyrbulshchyl and prepared by _overrated_

1744C - Traffic Light was authored and prepared by Igorbunov

1744D - Divisibility by 2^n was authored and prepared by Ziware

1744E2 - Divisible Numbers (hard version) was authored by dyrbulshchyl and prepared by mutant

1744F - MEX vs MED was authored and prepared by king-pankevich.acoolguy