Eric Nicholas K's answer to kim Yeon Jae's Junior College 1 H1 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Forgotten my JC stuff already. I could be wrong for this question.
J
J
4 years ago
For case 1 , 900 is eliminated not due to repetition but rather due to the condition that 900 < number < 8000. The range to be considered should be 905 to 995