What word begins and ends with an E, but has only one letter?

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?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Can you write down eight eights so that they add up to one thousand?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?