sir i have given f8 previously in march n i failed with 42 marks n i opted out of it and now in december i want to give f8 and f9 is it a good idea to give both in dec2016 and im starting to study now n i have almost 70 days for exam so will i be able to cover everything by just concentrating on the open tuition lectures and practicing revision kit is enuff for me to clear sir. thank you