If eleven plus two equals one, what does nine plus five equal?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

A father's child, a mother's child, yet no one's son.

Who am I?

A man dies of old age on his 25 birthday. How is this possible?

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

What does this rebus riddle means ?

81 x 9 = 801. What must you do to make the this equation true?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?