Steel type has most, I believe grass has least and ghost for the final question.
Normal has the least amount of weaknesses with only one fighting but it isn't super effective againist anything and it doesn't effect ghost and ghost type moves do not effect it but otherwise, there a several different Pokemon types which have two weaknesses.
No type! But spritomb AND sableye have no weaknesses.
Since Honchkrow is a Dark/Flying-type, its weaknesses are Electric, Rock, Ice, and Fairy-types.
the best two weaknesses are 1:grass 2:water types.
Bulbapedia would be your best bet. It gives you strengths and weaknesses of all Pokémon types, and weaknesses for every Pokémon ever mentioned in all five generations, which is useful when there are Dual-type Pokémon. http://bulbapedia.bulbagarden.net/wiki/Types
Normal has the least amount of weaknesses with only one fighting but it isn't super effective againist anything and it doesn't effect ghost and ghost type moves do not effect it but otherwise, there a several different Pokemon types which have two weaknesses.
Its weaknesses are ghost, bug and dark types.
fighting types
Using different types of thermometers, thermocouples, thermal resistances, pyrometers, etc.
dragon and ice types
gligars don't have enemies... they're friendly...but they have weaknesses! they are water types and ice types.
I think dragon types have two weaknesses and that is other dragon and ice types.
No type! But spritomb AND sableye have no weaknesses.
If you mean Electric-types weaknesses, they are only weak against Ground-types.
That's what Nintendo and game freak planned for dragon types weaknesses to be there will be no more weaknesses until they make up more Pokemon types which is highly unlikely.
The weaknesses of poison types are psychic and ground.
various types of power transmission system and their different application and advantages or dis advantages?