Tough paper - old course sfm nov 2018

Really disappointed with the Old Course Sfm Paper

If last time it was mistakes which tortured us , then this time it was the much ambiguous & tricky nature of the paper.

Felt like solving an Algebra Paper (where we have to make assumptions and solve a question using 'Let ..... be "x" )

Only around 20% paper was from Practice Manual or Study Material 

After putting so much efforts day in and day out to complete a Chapter  from those books , to face such a paper was very disappointing.