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

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

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?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

If Rajina's daughter is my daughter's mom, who am I to Rajina?

In The Image Below Which clock is the odd one out?

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

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)