Trivia Tuesday is a series in which I choose a topic, and provide Fun Facts or Interesting Trivia about it. This time the topic is Math.

The fun facts I'll present today are easy to grasp, but you might not have heard about them before, so here you go:

Math Trivia: Beginner Level

1. Pi (π)

Is defined as the ratio of a circle's circumference to its diameter. Pi is approximately 3.14~ and it's one of the most recurring numbers in mathematics and physics.

I find it funny but satisfying that there's a day in the year called Pi day.

2. All Your Base Belongs To...

There are countless numeral systems in math. The decimal system commonly used for mathematics in our worlds is a base-10 system. Computers use the binary (base-2) system.

Some, like the ancient Egyptian and ancient Roman, used grouping system with various symbols indicating various numbers, and the groups value is determined by counting all the symbols.

XXVII (27) is compromised of 2 X (tens,) 1 V (five,) and 2 I (ones.)

Most likely, you're already using more than one numeral system in your life.

I'm using the hexadecimal (base-16) system sometimes, especially when programming and/or dealing with colors.

3. Circle Is 360°

The division of a circle is likely derived from ancient Babylonian mathematics which used sexagesimal (base-60) numeral system. Dividing the circle into 6 sides (6 x 60) allows for easier division into smaller parts.

I never questioned why we were using degrees for circles, but now I have more appreciation for it. I already like it more than π-based systems.

4. Digital Root

Also called the repeated digital sum. Digital Root is the single number that comes from summing all the digits of a number, repeatedly, until one digit remains.

The digital root for 583 would 7 per the calculation: 5+3+8 = 16 and then 1+6 = 7.

I first discovered Digital Root by reading the visual novel 999: Nine Hours, Nine Persons, Nine Doors. In which Digital Root was used heavily in the story and puzzles.

5. Multiplication By 9

Multiplying any number by 9 then summing up the digits of the product results in 9.

This is simple but was very interesting to me when I found it. It's also a nice application for the Digital Root point I mentioned above.

What Do You Think?

After two weeks of Windows Trivia, I decided to do something different. A week or two of Math Trivia.

It's a wide topic, so I can find many weeks worth of Trivia about it, but I'll limit myself to the interesting ones. Tell me what do you think of these, and if they're easy enough for the beginner level. I'm thinking of intermediate level next.

If you have an idea for the next Trivia Tuesday's Topic, suggest it in a comment below.

Thanks for Reading

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