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

What does this rebus riddle means ?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Why do we preferably have round manhole covers and not square ones?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

What kind of storm is always in a rush?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title