Lapras is a Water / Ice type Pokemon. Therefore Electric, Grass, Rock, and Fighting attacks are super effective (they do 2X damage). Lapras is resistant to Water and Ice attacks (they do half damage), so those aren't good ones to try.
Ghost & Flying. I believe that's it! Not dark or bug because although they're super-effective against Psychic, they are not-effective against Fighting. And not Psychic, because though it's super-effective against Fighting, it's not-effective against Psychic.
Water and Grass attacks are super effective against Onix.
Rock, electric, ice, and psychic types are super effective against Crobat.
Steel is super effective against rock type pokemon.
Lapras is a Water / Ice type Pokemon. Therefore Electric, Grass, Rock, and Fighting attacks are super effective (they do 2X damage). Lapras is resistant to Water and Ice attacks (they do half damage), so those aren't good ones to try.
Flying and Psychic are super effective against fighting
Lightning is super effective against Water and Flying types in Pokémon battles.
Ghost & Flying. I believe that's it! Not dark or bug because although they're super-effective against Psychic, they are not-effective against Fighting. And not Psychic, because though it's super-effective against Fighting, it's not-effective against Psychic.
Water and Grass attacks are super effective against Onix.
Bug Type and Fighting Type moves are super effective against it.
Rock, electric, ice, and psychic types are super effective against Crobat.
Steel is super effective against rock type pokemon.
psychic pokemons and attacks are super effective
super effective is bug
Lapras is a Water and Ice type Pokemon so Electric type moves, Fighting type moves, Rock type moves and Grass type moves will be super effective.
normal type Pokemon are not super effective against any type.