30 facts about Mathematics
1. Zero ( 0 ) is the only number which can not be represented by Roman numerals.
2. What comes after a million, billion and trillion? A quadrillion, quintillion, sextillion, septillion, octillion, nonillion, decillion and undecillion
3. Plus (+) and Minus (-) sign symbols were used as early as 1489 A.D 4. 2 and 5 are the only primes that end in 2 or 5
4. 2 and 5 are the only primes that end in 2 or 5 5. An icosagon is a shape with 20
6. Among all shapes with the same perimeter a circle has the largest area.
7. Among all shapes with the same area circle has the shortest perimeter
8. 40 when written "forty" is the only number with letters in alphabetical order, while "one" is the only one with letters in reverse order
9. 'FOUR' is the only number in the English language that is spelt with the same number of letters as the number itself.
10. From 0 to 1,000, the letter "A" only appears in 1,000 ("one thousand"
11.from 0 to 1,000,000,000 , the letter B only appears in 1,000,000,000 (one billion)
12. Have you ever noticed that the opposite sides a die always add up to seven (7)
13. Trigonometry is the study of the relationship between the angles of triangles and their sides
14. Abacus is considered the origin of the calculator
15. Here is an interesting trick to check divisibility of any number by number 3.A number is divisible by three if the sum of its digits is divisible by three (3)
16. Do you know the magic of no. nine (9)? Multiply any number with nine (9 ) and then sum all individual digits of the result (product) to make it single digit, the sum of all these individual digits would always be nine (9).
17. If you add up the numbers 1-100 consecutively (1+2+3+4+5...) the total is 5050
18. A 'jiffy' is an actual unit of time for 1/100th of a second
19. Have you heard about a Palindrome Number? It is a number that reads the same backwards and forward, e.g. 12421
20. Have you heard about Fibonacci? It is the sequence of numbers wherein a number is the result of adding the two numbers before it! Here is an example: 1, 1, 2, 3, 5, 8, 13, 21, 34, and so on
21. The word “hundred” comes from the old Norse term, “hundrath”, which actually means 120 and not 100
22. In a room of 23 people there’s a 50% chance that two people have the same birthday.
23. Most mathematical symbols weren’t invented until the 16th century. Before that, equations were written in words.
24.. Every odd number has an “e” in it.
25. The reason Americans call mathematics “math”, is because they argue that “mathematics” functions as a singular noun so ‘math’ should be singular too.
26. Markings on animal bones indicate that humans have been doing maths since around 30,000BC.
27. Also, there are 13 letters in both “eleven plus two” and “twelve plus one”.
28. Zero is not represented in Roman numerals.
29. The word “mathematics” only appears in one Shakespearean play, “The Taming of the Shrew”.
30. In France, a pie chart is sometimes referred to as a “camembert”.