Ong Jing Long's answer to Pradeepa's Secondary 4 E Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Ong Jing Long
Ong Jing Long's answer
116 answers (Tutor Details)
:)
Ong Jing Long
Ong Jing Long
3 years ago
the initial diagram should just be filled with 1 in every box