My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Forwards I am heavy, backward I am not. What am I?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

If your uncle’s sister is not your aunt, what relation is she to you?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you decipher the two rows to find the hidden word?

How can a man go eight days without sleep?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

10+10 and 11+11 can give you the same answer.

Explain how?