Which is faster, Heat or Cold ? Explain.

Four friends are sitting on a tree. Each one of them is wearing a hat. They don't know which coloured hat are they wearing but they do know that two of them have green hats and two of them have orange hats.

Adam is sitting on the top branch and he can see the hats of Billy and Cyrus. Billy is sitting on a branch above Cyrus and he can see Cyrus hat. Duke is sitting at the base of the tree. Branches are covering him fully and no one can see his hat.

Now they are not allowed to look upwards. Who do you think will shout the colour of his hat first?

I know a number which is spelt in alphabetical order.
Do you?

What is the last thing you take off before bed?

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

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

What is the Surname of Barbie Doll?

A father's child, a mother's child, yet no one's son.

Who am I?

What is the difference between a jeweller and a jailer?