How can you take 2 from 5 and leave 4?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

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

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

Decode the movie name from the below picture?

A man dies of old age on his 25 birthday. How is this possible?