John was piloting a plane behind a car but was never able to overtake it. Why?

What 5-letter word typed in all capital letters can be read the same upside down?

10+10 and 11+11 can give you the same answer.

Explain how?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

If eleven plus two equals one, what does nine plus five equal?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

Which alphabet is a part of our body?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?