just like the hsc mgs, they did not show the working for the mc. there are also several or otherwise questions, and no indication whatsoever in the nesa solutions what are the or otherwise methods.
so i think we need to redo some questions, showing working for the mc and the or otherwise methods.
here are the or otherwise questions
advanced: Q31bii
extension 2: Q11cii, Q12dii, Q14ci, Q14cii
so no surprise there are no or otherwises for the standard papers, but quite surprising there are none for the extension 1, as many past extension 1 papers have or otherwises.
or otherwises have a long history in the past papers going right back to 1916. that they are still in these sample papers is an indication they are not going away any time soon.