Please log in to view the videos.

Sign Up for free now

Already have an account? Login

1x

Playlists

Comments

Wei Yi Hi everyone! Wei Yi - your tutor here! Thanks for watching my video course. Don't forget to sign up on the right hand side (it is free and it unlocks all the videos in this series). You can also a refer a friend to help boost their grades too. Thanks, Wei Yi and have a great study session!

09 Jun, 2016 17:21

Benjamin Lee Hi, may i know what is the difference between the 9647 and 9729.