Can it be possible to build a house that has all its four walls facing towards the South?

How can a man go eight days without sleep?

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

What is the last thing you take off before bed?

What month of the year has 28 days?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?