Originally Posted by Usta
Brackets are clear enough. The more interesting part is this:
--- * 3 = 9
--- = 1
Depends how you look at it...
The problem is more clearly written like this: (6/2) * (1+2)
, in which the answer is 9.
We were always taught to write using parenthesis/brackets when in question, so as to be clear about our intention, and to circumvent confusion.
In order for it to be 1, people would have to add their own set of parenthesis/brackets, which wouldn't follow the problem, as written. It's not written as: 6/[2*(1+2)]
, for example.