Words such as formula, equation and calculation sounds boring for those who hate Maths as a subject, whereas it is fun for those who have keen interest towards solving equations/problems.

October 14th is celebrated as World Maths Day. Let us know some interesting and amazing 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**5**. An icosagon is a shape with 20 sides

**Also Read:** Mersal Mathematics: 5 Shortcuts for Multiplication!

**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.** 12,345,678,987,654,321 is the product of 111,111,111 x 111,111,111. Notice the sequence of the numbers 1 to 9 and back to 1.

**Also Read:** 7 Mathematics Shortcuts That Can Blow You Down

**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

**Also Read**: Maths Aptitude Questions Types For Entrance Exams and Recruitment Preparation