A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

There is a rock group of four men that do not sing. Name It?

Why did Buffon take the goal with him after every Juventus match?

John and Jacob are planning on a vacation. John says, "It will be better if we take the train to the hotel. We will reach faster."
To this, Jacob says, "No. You are wrong. The train stops halfway to the hotel and then we will have to walk the rest of the way. We should take the bikes to the hotel directly."
John says, "You are wrong."

Now, John takes the train while Jacob takes the bike. The train travels at four times the speed of the bike. The bike travels at twice the speed of walking.

Who do you think will reach the hotel first?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Forwards I am heavy, backward I am not. What am I?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?