I got a wrong answer for saying "five is not many more than two". That means the same thing as "much more". This should not be incorrect!
Although "not many more" might be technically correct, it is not what a native English speaker would likely say (American). That is probably why it was marked wrong.
To 5. As if you say in english. Five? It is not much more than two. Pronomen it refers to five.
Larry, it is irrelevant what you say. The sentence that Drina presented is correct. A person can most definitely say "Five is not many more than two". The program should allow it.