If volume increases without an increase in mass, then the density decreases (Fig. 2.2 A to 2.2 C). Adding additional matter to the same volume also increa...

1. @tenfour The phrase “thousands of thousands”, is in the King James Bible. It means “Millions”. How do you say thousands in words? Note how the place in...

Ace Rag, also known as a weak ace, is an ace with any card below a ten. For example an (ace 7) or an (ace 9) would fall into the category of ace rag. From...

The rule to continue a Fibonacci sequence is, the next term in the sequence is the sum of the two previous terms. 10. Here are the first five terms of a s...

tangramInvented in China approximately 200 years ago, a tangram is a two-dimensional re-arrangement puzzle created by cutting a square into seven pieces —...

How many cards do you need to pick from a standard 52-card deck to be sure to get a red card? 27, because if you pick all of the 26 black cards, the next ...

A pattern is identified by a line that connects common price points, such as closing prices or highs or lows, during a specific period of time. Chartists ...

Dots and BoxesDots and Boxes is a pencil-and-paper game for two players (sometimes more). It was first published in the 19th century by French mathematici...

You use major when you want to describe something that is more important, serious, or significant than other things in a group or situation. How do you sp...

Easy Riddles. 1. Riddle: What has to be broken before you can use it? Answer: An egg. 2. Riddle: I’m tall when I’m young, and I’m short when I’m old. What...