I thought it was not possible to say something like the below.
It was in the range of from (problem number)5 to (problem number)9.
Even my native friend said it sounds horribly wrong and that I should say "the range of 5 to 9". Well, it turns out he is wrong. It is possible to say "the range of from...to". http://corpus.byu.edu/coca/
So I was wondering if it would be possible to use "from...to" in some other contexts as the prepositional complement.
So would it be grammatical to say
He was good with from (problem number) 5 to (problem number) 9 but not with from 10 to 15.
I think it kind of sounds alright, and even this nominal functions of prepositional phrases supports my claim.
But after thinking of it for too long, I'm losing it. Is it fine to say this?