What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

If eleven plus two equals one, what does nine plus five equal?

What runs around the whole yard without moving?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Take one out and scratch my head, I am now black but once was red. What am I?

I am an odd number. Take away a letter and I become even. What number am I?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?