An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What can you catch but never throw?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

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?

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

What does this simple rebus mean?

There are forty elephants and they have forty-fore heads. How can this be possible?