If you have bought the Problem Sums Formula sheets from me, please refer to them as I explain.
For those who want to get hold of Problem Sums Formula Sheet Page 1 and 2, here are 2 options.
(Self collection in Ang Mo Kio)
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=NMPSXXQMBATB8
(Handling Fee by Registered Mail)
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=3UUELSG8E5CEW
