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

I am lying and I always lie. Tell me whether I am lying or telling the truth.

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

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?

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

Can you find the key in the picture below?

Why are all black people so quick ?

What is the Surname of Barbie Doll?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?