How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What do you think with the below Picture ?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

What does the below image rebus riddle means ?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?