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?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Count the squares in the matchstick puzzle below?

Count the number of triangles in the given picture.

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.