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

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

What is the largest number you can write with just 3 digits?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What is the fastest way to double your money?

What number when divided in half becomes zero?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

Why do people go to bed?