During which month do people sleep the least?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

How many times can you subtract the number two from the number fifty?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

What have one eye but still cannot see?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?