First of all, thank you very much for your help. I studied F9 using your lecture and I got 63 in last June exam,
I am in dilemma about which optional papers to take. whether to take P7 or P4 for the Dec exam. I enjoyed your F9 class very much, but I am not great in calculation, I do spent a lot of time to learn them. I heard P4 is a lot harder than F9, Is it possible to learn P4 now for the Dec exam and I work full time. how much study hours you would recommend for the subject?