What country can make you shiver?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Why is a river so rich ?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

People make me, save me, change me, raise me. What am I?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

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?