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This is because in Western cultures, numbers above a thousand are grouped in 3s; the Greek prefices for the SI system are also grouped in powers of 10^3.

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Q: Why are numbers grouped into three's?
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How do you write 0.45 million rupees?

Rs 450000 or Rs 4,50,000 (note that the digits are NOT grouped in threes).


How many numbers between 299and400have three in them?

11 threes


One followed by a hundred zeros?

One googol. 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 * * * * * That is clearly incorrect since the zeros are in groups of three. A hundred zeros cannot be grouped into threes evenly.


What is the Lowest Common Multiple of 45 and 81?

Prime factor the 2.45 = 9x5 = 3x3x581 = 9x9 = 3x3x3x3Your LCM will contain all the multiples of both numbers. 45 has 2 threes and 1 five. 81 has 3 threes. Together you need 4 threes and 1 five to cover both numbers. Therefore your LCM = 3x3x3x3x5 = 405.


How can you make 37 using 4 threes?

It wouldn't possible. You would need other numbers.


Why do magpies hang out in threes?

Your sighting may be of a family breeding in your area. Numbers range from singles to flocks


What is 3 by 3 writing?

The rule of three is a writing principle that suggests that things that come in threes are inherently funnier, more satisfying, or more effective than other numbers of things. The reader or audience of this form of text is also more likely to consume information if it is written in groups of threes. From slogans ("Go, fight, win!") to films, many things are structured in threes. Examples include The Three Stooges, Three Little Pigs, Three Billy Goats Gruff, Goldilocks and the Three Bears, and Three Blind Mice.A series of three often creates a progression in which the tension is created, built up, and finally released. Similarly, adjectives are often grouped in threes to emphasize an idea.The Latin phrase, "omne trium perfectum" (everything that comes in threes is perfect, or, every set of three is complete) conveys the same idea as the rule of three.


What are multiples of 3 up to 500?

if you know your threes just times it by numbers you know like, 6,8,20,50,90,120,140 and so on


When was I Threes created?

I Threes was created in 1974.


When did I Threes end?

I Threes ended in 1981.


How many threes are in 81?

27 threes are in 81


What numbers would you write to have the probability of having a 3 is one third?

any three numbers as long as there is only one 3.(Or you could have two threes in 6 numbers,three in 9 etc.)