I drive at an average speed of 30 miles per hour to the railroad station each morning and catch my train. On a particular morning, there was a lot of traffic and at the halfway point, I had averaged only 15 miles per hour. How fast must I drive for the rest of the way to catch my train?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

The more of this there is, the less you see. What is it?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

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

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?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

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?

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