Which country gets ill every time?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Who are the happiest people in IPL match?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

What has lots of eyes, but can’t see?

I am quite hot but become too cold if you remove the first two letters. What am I?

What part of the chicken has the most feathers?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Name a key which is hardest to turn.