What has a ring but no finger?

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

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

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Can you tell a 3D object that has just two surfaces?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

Why did the Girl throw the butter out of the window?

Can you find the key in the picture below?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?