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?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

Complete the table series riddle by finding the number that can replace "??".

I have feet, but no legs. Which animal Am I?

When is the top of a mountain similar to a savings account?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Can you find out which options fits best with the missing column?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?