You need the silph scope which you get in the rocket game corner.
Any ghost type Pokemon can learn it.
You can't first you have to get a sliph scope
Ghost type attacks are super effective against both psychic and ghost type pokemon.
You can find Ghost-Type pokemons in Pokemon Tower in Lanvender City
Lavender Town hope this helped
in lavender town where the towers at with ghost dbzpokeyu
u have to have a silph scope so that ghosts are seen as actual Pokemon in Pokemon tower
You can't. The move deleter in Fuchsia city.
You find in the ghost building.(sorry im not specific.)
You must obtain the Silph Scope from Team Rocket.
Get the silph scope at silph co in Saffron city. Then you'll be able to fight the ghosts.
You have to attain the Silph Scope to reveal the ghost. Kill it (LVL 30 Marowak) and then fight a series of Rocket grunts to get to Fuji, who gives you a pokeflute.