>FWIW, it's the same rule as for "number" and "amount"; use "number" for countable things and "amount" for non-countable things.
>
>Yes, I know the rule (we've actually talked about this before) :)
>
>Having said that.... ever get a bill that says, "Amount Due?" Pretty sure the value they're looking for is a countable figure :)

True, but presumably it's short for "amount of money due." And while units of money (14 dollars) are numbers, money is an amount. But definitely one of the gray areas around this.

Tamar