Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

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?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

What is harder to catch the faster you run?

Replace the question mark with the correct number in the below-given picture?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?