20 Interesting and Amazing Facts About Maths
1. Zero ( 0 ) is the only number which can not be represented by Roman numerals.
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.
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.
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.
Refers from www.careerindia.com
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