Which number should replace the question mark?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Which country gets ill every time?

How many sides does a circle have?

Which alphabet letter is a question?

I can write cow in 13 letters.

Can You?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

What you cannot hold but it is yours?