William Ng's answer to Elle's Junior College 2 H2 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
William Ng
William Ng's answer
58 answers (Tutor Details)
key idea is to decide how and what you want to arrange, step by step and think through if it gives a new arrangement, or not
Elle
Elle
3 years ago
Thank you