What runs around the whole yard without moving?

A man dies of old age on his 25 birthday. How is this possible?

Rearrange the letters in "new door" to make one word.

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

Can you count the number of squares in the given picture?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

What does below chemistry rebus means?

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

What has one eye, but can’t see?