Top 10 best maths facts

1. In a group of 23 people, at least two have the same birthday with a probability greater than half
2. Everything you can do with a ruler and a compass you can do with a compass alone
3. Much as with people, there are irrational, perfect and complex numbers
4. If you write our PI to two decimal places, backwards it spells “Pie”
5. The word hundred is derived from the word “hundrath”, which actually means 120 and 100.
6. If you shuffle a pack of cards properly, chances are that exact order has never been seen before in the whole history of the universe
7. The post popular favourite number is 7
8. The number 4 is considered unlucky in much of Asia
9. Zero is an even number, but people take longer to decides whether it’s even or odd because it’s not as easy for us to mentally categorise
10. Take any four digit number, follow these steps, and you’ll end up with 6174

·         Choose a four digit number(only condition is that it has at least two different digits)

·         Arrange the digits of the four digit number in descending then ascending order

·         Subtract the smaller number from the bigger one

·         Repeat

·         Eventually you’ll end up at 6174, which is known as Kaprekar’s constant. If you then repeat the process you’ll just keep getting 6174 over and over again.