Out of all the existing dual types, which dual types have one or multiple 4× weaknesses?

Question

I want to know so I can have a good idea on which Pokemon to use whenever I build teams. I want to know about dual types from Gen 1-8. You don't have to include the Pokemon, just the 4× weaknesses the dual type has.

Answer 1

Here are the dual types:
Normal/Ice: 4x Fighting
Normal/Rock: 4x Fighting
Normal/Dark: 4x Fighting
Normal/Steel: 4x Fighting
Fire/Electric: 4x Ground
Fire/Ice: 4x Rock
Fire/Poison: 4x Ground
Fire/Flying: 4x Rock
Fire/Bug: 4x Rock
Fire/Rock: 4x Water, Ground
Fire/Steel: 4x Ground
Fire/Ground: 4x Water
Water/Flying: 4x Electric
Water/Ground: 4x Grass
Water/Rock: 4x Grass
Electric/Poison: 4x Ground
Electric/Rock: 4x Ground
Electric/Steel: 4x Ground
Grass/Ice: 4x Fire
Grass/Ground: 4x Ice
Grass/Flying: 4x Ice
Grass/Bug: 4x Fire, Flying
Grass/Fighting: 4x Flying
Grass/Psychic: 4x Bug
Grass/Dark: 4x Bug
Grass/Dragon: 4x Ice
Grass/Steel: 4x Fire
Grass/Fairy: 4x Poison
Ice/Flying: 4x Rock
Ice/Bug: 4x Fire, Rock
Ice/Rock: 4x Steel, Fighting
Ice/Dark: 4x Fighting
Ice/Steel: 4x Fighting, Fire
Ice/Fairy: 4x Steel
Fighting/Poison: 4x Psychic
Fighting/Bug: 4x Flying
Fighting/Dragon: 4x Fairy
Fighting/Dark: 4x Fairy
Poison/Rock: 4x Ground
Poison/Steel: 4x Ground
Ground/Flying: 4x Ice
Ground/Rock: 4x Grass, Water
Ground/Dragon: 4x Ice
Flying/Bug: 4x Rock
Flying/Dragon: 4x Ice
Psychic/Ghost: 4x Dark, Ghost
Psychic/Dark: 4x Bug
Bug/Steel: 4x Fire
Rock/Steel: 4x Fighting, Ground
Rock/Dark: 4x Fighting
Rock/Fairy: 4x Steel
Dragon/Dark: 4x Fairy
Dark/Steel: 4x Fighting
Hope this helps!

Comments

That even helped me out

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UNUSED:
Normal/Ice
Normal/Rock
Normal/Dark
Normal/Steel (4x Fighting)
Poison/Steel

Left Out/Updates:
Fire/Ground = 4x Water
Grass/Fighting = 4x Flying
Grass/Bug = 4x Fire, Flying
Ice/Rock = 4x Fighting, Steel
Ground/Dragon = 4x Ice
Flying/Dragon = 4x Ice
Rock/Fairy = 4x Steel

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Ok! Sorry for missing

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Ground/Dragon = 4x Ice
Normal/Steel = 4x Fighting

-_-

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Ghost isn't weak to Fairy.

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It's a magic done by autocorrect! I actually typed Dragon/Fighting!! Yeah it's here now!

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lol i cant

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Now OK???

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Thanks. This helped alot.

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UNUSED:
Normal/Ice
Normal/Rock
Normal/Dark

Normal / Dark combination is there - Obstagoon line

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Not only that, Alolan Raticate line.

Answer 2

First, let's look on to the Strength of all the types, then we would look on to the 4x weaknesses.

Normal: None
So no 4x weakness.

Fire: Grass, Ice, Bug, Steel. Now we would be able to check out the 4x weaknesses of Fire:

• Grass / Ice
• Grass / Bug
• Grass / Steel
• Ice / Bug
• Ice / Steel
• Bug / Steel

Water: Fire, Ground, Rock. Water is 4x weakness of:

• Fire / Ground
• Fire / Rock
• Rock / Ground

Grass: Water, Ground, Rock. Grass is 4x weakness of:

• Water / Ground
• Water / Rock
• Rock / Ground

Electric: Water, Flying. Electric is 4x weakness of:

• Water / Flying

Ice: Grass, Ground, Flying, Dragon. Ice is 4x weakness of:

• Grass / Ground
• Grass / Flying
• Grass / Dragon
• Ground / Flying
• Ground / Dragon
• Flying / Dragon

Fighting: Normal, Ice, Rock, Dark, Steel. Fighting is 4x weakness of:

• Normal / Ice (unused)
• Normal / Rock (unused)
• Normal / Dark
• Normal / Steel (unused)
• Ice / Rock
• Ice / Dark
• Ice / Steel
• Rock / Dark
• Rock / Steel
• Dark / Steel

Poison: Grass, Fairy. Poison is 4x weakness of:

• Grass / Fairy

Ground: Fire, Electric, Poison, Rock, Steel. Ground is 4x weakness of:

• Fire / Electric
• Fire / Poison
• Fire / Rock
• Fire / Steel
• Electric / Poison
• Electric / Rock
• Electric / Steel
• Poison / Rock
• Poison / Steel (unused)
• Rock / Steel

Flying: Grass, Fighting, Bug. Flying is 4x weakness of:

• Grass / Fighting
• Grass / Bug
• Fighting / Bug

Psychic: Fighting, Poison. Psychic is 4x weakness of:

• Fighting / Poison

Bug: Grass, Psychic, Dark. Bug is 4x weakness of:

• Grass / Psychic
• Grass / Dark
• Psychic / Dark

Rock: Fire, Ice, Flying, Bug. Rock is 4x weakness of:

• Fire / Ice
• Fire / Flying
• Fire / Bug
• Ice / Flying
• Ice / Bug
• Flying / Bug

Ghost: Psychic / Ghost. Ghost is 4x weakness of:

• Psychic / Ghost

Dragon: Dragon is the only strength of it and it can't be paired. So no 4x Dragon weakness.

Dark: Same as Ghost.

Steel: Ice, Rock, Fairy. Steel is 4x weakness of:

• Ice / Rock
• Ice / Fairy
• Rock / Fairy

Fairy: Fighting, Dragon, Dark. Fairy is 4x weakness of:

• Fighting / Dragon
• Fighting / Dark
• Dragon / Dark

Hope this helps :)