FightingDark
Fighting/Dark weaknesses
Fighting/Dark is weak to Fairy, Fighting and Flying, and takes 4× from Fairy.
When Fighting/Dark Pokémon are hit
4×Hits hardest
2×Super effective
½×Not very effective
¼×Barely scratches it
0×No effect
Its two types separately
Multiply the two to get the result. For example, Fairy deals 2× × 2× = 4×.