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The prefix bi- means 2. Similarly, the prefix tri- means 3. Originally, the billion was defined as a one followed by 12 zeros - twice as many as the million; while the trillion had three times as many zeros than the million. Somehow, the meaning changed over time, especially in English-speaking countries (to a one with 9 zeros for a billion, and a one with 12 zeros for a trillion).
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Earn +20 ptsQ: Why is a billion called a billion?
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How do you call a billion year time period?
It COULD be called a Gigayear, but in practice it is simply called "a billion years".
What comes after billion?
In the US a trillion comes after a billion. In other countries, a billion is called a milliard and a billion would be equivalent to a trillion in US terms.
What is 7671000000 called?
7 billion, 671 million
What is called 10 to the power 9?
One billion
How do you spell one billion in French?
a billion (1 000 000 000) is called un milliard in French.
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