Answer 1

Well, I think you had read the previous lessons, so, as this lesson said, if you have for example two strings that are numbers, you can't add them like you learn since you were a child let's try with this, if you have the string "5", and the string "6" you know that "5"+"6" is "56" because add with strings only put together the strings you are adding up so if you want to add 5+6 and obtain 11 you have yo convert this number as float or integer, and you will get 11.0 or 11 respectively, remember the conversion comands.