# 7 Super Fun Facts about Maths

Are you a ‘Maths Scardy-Cat’? Then, you’re absolutely at right place. This article will today ‘Foo-away’, your fear, when you will know about some of these ‘Super Fun Facts about Maths’. Old Readers, that’ll be a treat for you, as we’ve continued this article that was originally published a week ago, you can get back to old one, on the URL below :

Early article(s) : 8 Super Fun Facts about Maths

1. A pizza that has radius “z” and height “a” has volume Pi × z × z × a.
Because the area of a circle is Pi multiplied by the radius squared (which can be written out as Pi × z × z). Then you multiply by the height to get the total volume.

2. The word hundred is derived from the word “hundrath”, which actually means 120 and not 100.

3. In a room of just 23 people there’s a 50% chance that two people have the same birthday.
It’s called the Birthday Problem. In a room of 75 there’s a 99% chance of two people matching.

4. 111,111,111 × 111,111,111 = 12,345,678,987,654,321.
It also works for smaller numbers: 111 × 111 = 12321.

5. Zero is the only number that can’t be represented in Roman numerals.

6. 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. 555 is used by some in Thailand as slang for “hahaha”, because the word for “five” is pronounced “ha”.
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