There is something which you can be arrested for attempting but not for successfully completing.

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

What has no start, end, or centre?

Why is it very easy to weigh a fish?

How many sides does a circle have?

I look at you, you look at me, I raise my right, you raise your left. What am I?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

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?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?