Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What does this mean?

CCCCCCC

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?