Exactly

In Maths it seems that most of the time, there can only be one way to doing things. You have to show your working in this format, and write your final statement using this sign or whatnot. My Math teacher is really that type. Even though she claims that she is only trying to help us get higher marks in exams, I don't buy that. If there's an easier and faster way, why not take it? But for her, it's sort of an 'always been doing this' thing and she just won't budge from that.
Life is a highway
Sometimes there are bends and detours
But just keep walking
It also depends on which way you want to go. There may be road signs and all but everyone has to interpret them differently. So that would be how many permutations?
This world is so not mathematical.