It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Why do we preferably have round manhole covers and not square ones?

What has many keys but can’t open a single lock?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?