Buy me, smell me or deliver me, I do not change.

Who am I?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

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?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

What number should come in place of the question mark below?

What four weights can be used to balance from 1 to 30 pounds?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?