Q:
# How many millions equal one billion?

A:
### Quick Answer

**One thousand millions equal one billion.** According to Oxford Dictionaries, this equivalence has always been true in American English, but British English used to equate one million millions with one billion.

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Sometimes, the British press uses "one thousand million" as an alternative way to indicate one billion. This alternative term is helpful to speakers of other languages, such as Spanish, for whom the term "billion" actually refers to one million million, not one thousand million. "Milliard" is also a British term for one thousand million, although it has been gradually phased out among the British scientific community.

In the United States, one billion is the general standard for representing one thousand million.

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Q:
## Why does a number to the zero power equal one?

A:The concept of a number raised to the zero power equals one can be explained in several ways and is based on basic multiplicative concepts. Looking at the pattern established when a number is raised to different powers, each one less than the next, helps explain the concept.

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Q:
## How do you define "exponential?"

A:

Full Answer >**"Exponential" is an adjective that means of pertaining to an exponent or exponents, of pertaining to the constant "e," or of an equation having one or more unknown variables in one or more exponents.**The word is common in mathematics, and its origins are French and Latin.Filed Under: -
Q:
## What does pi stand for?

A:The number pi represents the ratio of a circle's circumference to its diameter. The ratio never changes for any circle. It is approximately valued at 3.14, but its decimal places have been figured to more than a trillion digits as of 2014.

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Q:
## Is 19 a prime number?

A:

Full Answer >**The number 19 is the eighth prime number.**A prime number is a positive, whole number that is only divisible by one and itself. Nineteen is also the seventh Mersenne prime exponent, which is a prime number that is one less than a power of two.Filed Under: