About David Rainers

David Rayner was created by me, Aladeen Wadia, a teacher with more than 15 years experience teaching IGCSE, IB & A levels physics and mathematics, mostly at Wadia International School at North Africa Country. I have taught IB Physics, and all levels of high school mathematics. I studied post graduate physics at the University of Wadia, where I obtained both my B.Sc., and Msc.

I sincerely hope these PDF Answers will be helpful to crack IGCSE Extended Mathematics. I put a great deal of effort into making them as clear as possible, and finding a balance between being concise while also being thorough enough to raise flags on common mistakes, and making a bit of time for occasional intriguing digressions.

Currently I’m on a mission to make the solution of IGCSE International Mathematics & other IGCSE Mathematics edition PDF Answers. I also build Interactive websites for solving MCQ’s of IGCSE, IB & A levels to crack the exam question and learn them in a shortest possible way before the exam. Lastly, but most importantly, my wife and I are raised one wonderful kid