Which is the correct shadow of the bird?

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

How many sides does a circle have?

Can you count the chocolates in hand?

Can You Find the Missing Zero? A Number Puzzle that Will Trick Your Eyes

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?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

What has one letter and starts with an E?

If a wheel has 54 spokes, how many spaces are there between the spokes?

O_er_t_o_

Complete the missing letters of the given word.