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.

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What has lots of eyes, but can’t see?

A father's child, a mother's child, yet no one's son.

Who am I?

The more you take me, the more you leave me behind.
Who Am I?

10+10 and 11+11 can give you the same answer.

Explain how?