I have teeth but i don't bite. Who Am I ?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

Why is the longest human nose just 11 inches?

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

How is a fly different from a mosquito?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

I have feet, but no legs. Which animal Am I?