What has no start, end, or centre?

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

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Keyboard words are not in alphabetical order, Why?

By using 'because' continuously three times, can you make an English statement ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?