Aleksandr Noudelman – 10 Interesting Math Facts

(c) Aleksandr Noudelman

1. If you write out pi to two decimal places, backwards it spells “pie”.

2. A French word for pie chart is “camembert”.

3. The spiral shapes of sunflowers follow a Fibonacci sequence

4. The Fibonacci sequence is encoded in the number 1/89.

5. A pizza that has radius “z” and height “a” has volume Pi × z × z × a.

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

7. 111,111,111 × 111,111,111 = 12,345,678,987,654,321.

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

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

10. (6 × 9) + (6 + 9) = 69.