They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

During which month do people sleep the least?

If an electric train is travelling south, then which way is the smoke going?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

Before Mount Everest was discovered, what was the highest mountain in the world?

The more you take me, the more you leave me behind.
Who Am I?

If eleven plus two equals one, what does nine plus five equal?

Which point will the car reach to go out?

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