By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What runs around the whole yard without moving?

Can you count the number of triangles in the given picture?

What country can make you shiver?

Replace the question mark with the number below given a simple math problem.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

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?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?