Build a team
Pick up to six Pokémon and see what the team is weak to, what it resists and what it cannot hit for double damage. If you pick a game, the suggestions keep only what exists in its Pokédex.
In each slot: what that Pokémon takes for quadruple or double damage, what it resists and what it is immune to. The number next to a type, in the team reading, is how many in the team are in that situation. The math looks only at types; abilities and items are left out.