The numerical digits we use today such as 1, 2 and 3 are
based on the Hindu-Arabic numeral system developed over 1000 years ago.
Different names for the number 0 include zero, nought,
naught, nil, zilch and zip.
The smallest ten prime numbers are: 2, 3, 5, 7, 11, 13, 17,
19, 23 and 29.
2 and 5 are the only prime numbers that end with a 2 or a 5.
The golden ratio of approximately 1.618 between two
quantities such as lengths often appears in nature (tree branching, uncurling
ferns, pine cone arrangements etc) and has been used throughout history to
create aesthetically pleasing designs and art works such as Leonardo da Vinci’s
Mona Lisa.
Fibonacci numbers are named after Italian mathematician
Leonardo of Pisa (better known as Fibonacci) who introduced them to Western
Europe after they had earlier been described by Indian mathematicians. They are
related to the golden ratio and proceed in the following order: 0, 1, 1, 2, 3,
5, 8, 13, 21, 34, 55, 89, 144, 233, .... Can you see the pattern?
The number Pi (the ratio of the circumference to the diameter
of a circle) can’t be expressed as a fraction, making it an irrational number.
It never repeats and never ends when written as a decimal.
Here is Pi written to 100 decimal places:tt
3.1415926535897932384626433832795028841971693993751
058209749445923078164062862089986280348253421170679
What comes after a million, billion and trillion? A
quadrillion, quintillion, sextillion, septillion, octillion, nonillion,
decillion and undecillion.
The name of the popular search engine ‘Google’ came from a
misspelling of the word ‘googol’, which is a very large number (the number one
followed by one hundred zeros to be exact).
A ‘googolplex’ is the number 1 followed by a googol zeros, a
number so ridiculously big that it can’t be written because there literally
isn't enough room in the entire universe to fit it in!
Check out some more big numbers.
You might have heard the word ‘infinity’ before or seen its
symbol that looks like the number 8 placed on its side. Infinity means a
limitless quantity or something that goes on forever. While it’s not really a
number like 1, 2 or 3, infinity is often used in math as part of equations and
formulas.
Regards
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