Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
For this type of question you need to think very logically.
Date Posted:
2 years ago
For the reason why a cannot be 1 is because in multiples of 4, there’s no such number that ends with 1. Therefore a can only be 2.