During which month do people sleep the least?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

How can you take 2 from 5 and leave 4?

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

What is the riddle which can be asked all day with a different correct answer each time.

If you say my name, I will no longer exist. What am I?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

I am white when I am dirty, and black when I am clean. What am I?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?