Are trolls smart?

When the 13 Drawfs and Bilbo get caught by the three trolls in the deep woods, they were going to get killed unless Gandolf didn't help them. Gandalf made it sound like one of the trolls were talking and they started arguing on how to kill the little people again. By doing this he distracted the trolls and safely got everyone free. The only reason that Gandalf was able to create another argument between the trolls is because he's a wizard and can easily manipulate the minds of the stupid, also it was dark and so it made it more easy to confuse the trolls. Trolls aren't smart because if they cant distinguish the difference between their own voices then they have to be unintelligent.

Why was Bilbo getting frusterated at all the comotion at his house?

Bilbo was getting frusterated because all dwarves barged into his house without Bilbo knowing who they were and why they were here. All the dwarves wanted alot of food and drinks. Bilbo was getting tired and concerned to know about the adventure from them, so he went to bed even know all the dishes weren't clean, and he never ever does that.

What will Bilbo do about this adventure?

Bilbo Baggins is a stuburn lazy hobbit who never goes on an adventure. When 13 little dwarfs and Gandolf come by and ask to go on an adventure do you think that Bilbo will except the adventure willingly or will he fight not going?