What does does this rebus picture means ?

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

How is this possible?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

How can you make number one disappear by adding something to it?

Find the hidden panda in the image below.

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

What have one eye but still cannot see?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

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?

There is something which you can be arrested for attempting but not for successfully completing.