Holiday Homework (Paper 2) (Q 1,4,5,6)

Dear students, for you reference... keep doing ,,,

Holiday Homework (Paper 1) Q6,9,11

Dear students, 

That's all for paper 1, I will mark Question 10 & 12.  Will post paper 2 next week, keep doing :)

Dear students,

I have since corrected 11b, thanks to Yoong Wei.  Please check 11a too, the answer is different from what is given.