400 billion systems - UK or US definition?

As per title, do they mean 400,000,000,000,000 (UK) or 400,000,000,000 (US) ?

Not that it makes much difference in reality, just curious!
 
Even our own Government has stopped using billion as a million million, so it's safe to assume that a billion in this case is a thousand million ;)
 
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It is my understanding that the standard definition of a billion is now pretty much a thousand million (which correctly is called a milliard).The American way of it has won out here and the previous meaning of a billion being a million million is pretty much no longer used.
The term billion in "400 billion stars" is the american one.
Fiddlesticks, I know....
 
"The short scale billion denoting one thousand million, 109, or 1,000,000,000. This is now normal usage in both British and American English."

So you see a thousand million is a billion in both countries and has been for a while now.
 
The hell? There is a difference between number definitions in the two countries? Man we really are sheltered from the rest of the world over here in the states.
 
I've always used the thousand billion definition.

Using the now perhaps defunct billion as a template, what was a trillion, a million million million?
 
thought that the uk officially used the short scale billion now! wasn't it something blair implemented? could be wrong, but if not, i admire and support any stalwarts insisting on the continued usage of the, correct, large scale!
 
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The hell? There is a difference between number definitions in the two countries? Man we really are sheltered from the rest of the world over here in the states.

Try being anywhere else in the world and being confronted with gallons, the US and British measure of each is different as well. Use litres like everyone else you neanderthals so questions like 'which bloody gallon do they mean?' can end.
 
thought that the uk officially used the short scale billion now! wasn't it something blair implemented? could be wrong, but if not, i admire and support any stalwarts insisting on the continued use of the large scale!

Waaaay before Blair - the "short billion" has been official UK use since Harold Wilson.

Anyone who believes the UK uses a million million as it's definition of a billion likely also believes we use pounds, shillings and pence, as both are equally historic.
 
I've always used the thousand billion definition.

Using the now perhaps defunct billion as a template, what was a trillion, a million million million?

I think it was based on 1 thousand thousands = 1 million (1+6 zeros)
1 million millions = 1 billion (1 + 12 zeros)
so 1 billion billions = 1 trillion (1 + 24 zeros)
in old English money.... (could be wrong though)
 
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