What is the fastest way to double your money?

What is wrong in the below Picture?

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?

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Which famous Hollywood movie name is hidden in the below rebus?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?