A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

What Adam and Eve do not have but the rest of the people have?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

The richest man in the city Mr Rechard is kidnapped. James Bond is appointed to the case. At the crime scene, a note is found written by Mr Richard. The note read:

"First of January, Fourth of October, Fifth of March, Third of June."

James Bond knew that somehow, the killer's name was hidden in the note. The following were the suspects:

Jack Richard, the son and the heir of property.
John Jacobson, the employee of Richard.
June Richard, the wife of Richard.

James Bond took only a few moments to deduce the killer's name. Can you tell who was the killer?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?