When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What has many teeth, but cannot bite?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

The Little ant seems to be always confused. Do you know why?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

What breaks yet never falls, and what falls yet never breaks?

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