Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Lv 615,199 points

dennis

Favorite Answers49%
Answers1,735

I am a retired University Mathematics lecturer . I am the author of "Bramwell's Subtraction Method"(BSM)"The fun and easy way to do Subtraction".The book is due for publication in November 2013.