Can you count the number of matches in the picture below ?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?