How many sides does a circle have?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

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?

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

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

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

Which is the correct shadow of the bird?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?