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?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

500 women soldiers are arranged in an array of ten rows and fifty columns in accordance with their respective heights. Now, the tallest woman from each row is asked to move out in the front. From them, the shortest one is labelled as Alpha. They are then asked to resume their original position.

Now, the shortest woman in each column is asked to come out in front. The tallest among them is labelled as Beta.

Can you find out if Alpha will be taller or Beta?

I taste better than I can smell. Who am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

I don't get anymore wetter, no matter how much rain falls on me.

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Why do you find that most of the buildings are deprived of the 13th floor?