What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

What has one letter and starts with an E?

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?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What have one eye but still cannot see?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?