I think that so long as whatever you wrote evaluates to the correct answer then you'll get the mark. Since 'simple' is a relative term, they must apply the same rule to all extents to maintain consistency
man im soooo pissed off
i didnt read the q properly
so i did it as if they were sitting in a straight line!!
arghhhhhhhhhhh!!
anyone else do that??
3 marks down the drain