Quote Originally Posted by Besame View Post
Speaking of "learned" in school, in formal writing, coordinating conjunctions (for, and, nor, but, or, yet, so) are disapproved as sentence starting words. In addition, is "learnt" a word? Oh, and you forgot the comma after "and if not". Have some sympathy for those with math weaknesses Mr. Perfect English. When people attempt to make others feel that their skills are inadequate, it may just point out their own.
https://en.oxforddictionaries.com/us...rnt-vs-learned

https://www.merriam-webster.com/word...sentences-with

If you had taken the trouble to read my whole post, you would have ascertained that I do have sympathy for those with maths weaknesses.