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

Replace the question mark with the correct number in below Picture:

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

What jumps when it walks and sits when it stands?

What is wrong in the below Picture?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Can you place six X (crosses) in below board without making three in a row in any way ?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?