Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

I am white when I am dirty, and black when I am clean. What am I?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

You need to remove two matchsticks to make the below equation true. Can you do it ?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

Using Only Five 5's and any mathematical operator make sum as 37

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

Count the Triangle in the figure given below:

There is something which you can be arrested for attempting but not for successfully completing.