what does this below rebus represent identXQQQQQME

Find out the missing number in the picture attached:

I can write cow in 13 letters.

Can You?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

I am an odd number. Take away a letter and I become even. What number am I?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.