1. The implicit curve equation (x2+y2-1)3-x2y3=0 produces the heart shape.
2. The term Googol (10100, ie, 10 followed by 100 zeros) was invented by a 9-year old boy Milton Sirotta.
3. The Reuleaux Triangle is a shape of constant width other than a circle.
4. The Fibonacci sequence are numbers where each following number is the sum of the previous two:
0 1 1 2 3 5 8 13 21 34 55 89 ..5. A dollar can be made into small change in 293 ways.
6. You can remember the value of Pi (3.1415926) by counting each word's letters in "May I have a large container of coffee?"
7. 1089 multiplied by 9 gives an exact reverse: 9801.
8. From 0 to 1000, the letter "A" only appears in 1000 ("one thousand").
9. 2 is called the "oddest" Even-Prime number. 2 is a unique Even-Prime because while all Evens are divisible by 2, any number apart from 2 that is divisible by 2, is not a Prime.
10.40 when written "forty" is the only number with letters in alphabetical order, while "one" is the only one with letters in reverse order.
11. The "Google" website name was inspired by "Googol".
12. Pi (3.14159...) is a number that cannot be written as a fraction.
13.
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