There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Can you count the number of matches in the picture below ?

What time is it when an elephant sits on a fence?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

What has lots of eyes, but can’t see?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What does this rebus puzzle means ?