Which is the correct shadow of the bird?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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.

What begins with T, ends with T, and has T in it?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Can you find the company name in the pictogram below?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

The King of a distant land had heard that Birbal was one of the wisest men in the East and so desired to meet Birbal. He sent Birbal an invitation to visit his country.

In due course, Birbal arrived in the distant kingdom. When he entered the palace he was flabbergasted to find not one but six kings seated there. All looked alike. All were dressed in kingly robes. Who was the real king?

The very next moment he got his answer. Confidently, he approached the king and bowed to him.

How did Birbal know who was the real king?

What kind of band never plays music?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?