Mathaddict100's answer to James's Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Mathaddict100
Mathaddict100's answer
534 answers (A Helpful Person)
1st
Here are the solution for 22 and 23 only..Will post 21 soon when I'm really sure of my answer..Hope it helps.. :)