There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

I am white when I am dirty, and black when I am clean. What am I?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

What seven-letter word has hundreds of letters in it?

Queen Elizabeth organised a royal party.

To Avoid uninvited guest royal family set a password.
Jack (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Jack thought is enough and he walked to the entry point. The security person said 'eight' , Jack replied smilingly 'four'.
He was immediately thrown out of the party. why ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Which is the correct shadow of the bird?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?