Rearrange the letters in "new door" to make one word.

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

What does this mathematical rebus means ?

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

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

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

It belongs to you, but other people use it more than you do. What is it?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?