What is the Surname of Barbie Doll?

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?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

Decode this picture on T-Shirt and tell what it says ?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you tell a 3D object that has just two surfaces?

Why did the Girl throw the butter out of the window?

That attorney is my brother, testified the accountant.

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

Who is lying?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?