Billion-dollar trick

Question

What you would use better?

a) A billion-dollar trick

or

b) A billion dollars trick

or

c) something different

The context is something like:

He showed me {a|b|c}

Any question that h/b answered should be good for the upvote @Hellion. Can you explain what is wrong with this question? It would be good to know, not to make the mistakes again — prosti, Dec 29 '16 at 01:43

score 1 · Accepted Answer · answered Dec 27 '16 at 23:21

If you mean "a trick that saves [or costs] a billion dollars", then the expression is "a billion-dollar trick".

The hyphen is necessary because billion modifies only dollars (not dollar trick); why the word dollar is not pluralized I don't know, but it isn't.

Billion-dollar trick

1 Answers1