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?

What always comes into a house through the keyhole?

The more it dries, the wetter it becomes. Can you tell what it is?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

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.

Find the missing number in the sequence below:

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Can you write down eight eights so that they add up to one thousand?

Can you find a number that lies one third of the distance between 1/3 and 2/3?