# 10 Maths Fun Facts You Didn’t Know #1!

## 1. The Fibonacci Sequence

The spiral shapes of a shell follow a Fibonacci sequence. The Fibonacci Sequence is the series of numbers which the following number is found by adding up the two numbers before it: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, etc, etc.

Leonardo Pisano was born late in the twelfth century in Pisa, Italy and the fibonacci sequence is the foundation of the golden ratio.

## 2. It’s all about pizza!

A pie that has radius “Z” and height “A” has volume Pi×Z×Z×A. Which means if you have a pie with a radius of 20cm and height of 8cm, the volume is Pix20X20X8. That’s amazing!

## 3. Hundred is not hundred

The word “hundred” is actually derived from the Old Norse word “hundrath,” which actually means 120, not 100. Maths is not confusing, but languages make it confusing.

## 4. Birthday Probablity

In a room of just 23 people there’s a 50% chance that two people have the same birthday.

## 5. The world’s favourite number is 7

The most popular favourite number is 7. Coincidentally, a week has 7 days, there are 7 wonders of the world, James Bond is 007, rainbows have 7 colors, there are 7 continents and a neutral pH value is 7.

## 6. 10! Seconds

10! seconds is exactly 6 weeks. 10! means 10 factorial. 10! = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 3628800 seconds. Which is 42 days, or 6 weeks, exactly.

## 7. There is no Roman zero

Zero is the only number that can’t be represented in Roman numerals. Because Roman Numerals System was developed for mostly knowing the price of goods, and to trade.

## 8. Magic Dice

The numbers on opposite sides of a dice always add up to seven.

## 9. Pythagoras has another theorem

We all have heard about the Pythagoras theorem. But there is also something which is known as Pythagoras constant. The square root of 2 i.e. 1.41 was the first rational number to be discovered which is known as the Pythagoras constant.

## 10. The difference between even and odd numbers

Mathematically, an even number is a number that can be divided into two smaller numbers which are actually whole numbers.

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