IceGround
Ice and Ground types: weaknesses, resistances and Pokémon
Ice and Ground Pokémon take double damage from Fire, Water, Grass, Fighting and Steel moves, resist Poison moves and are immune to Electric moves.
That is 5 weaknesses against 2 resistances, so these Pokémon rely on Speed or offensive power to make up for it.
Ice moves are super effective against Grass, Ground, Flying and Dragon and not very effective against Fire, Water, Ice and Steel. Ground moves are super effective against Fire, Electric, Poison, Rock and Steel and not very effective against Grass and Bug.
To beat these Pokémon, your best pick is Fire, Water and Grass moves. Avoid Poison and Electric moves, which deal little or no damage.
There are 3 Pokémon with this combination, such as Swinub, Piloswine and Mamoswine.