Is it possible to change or delete the auto generated numbers corresponding to the questions on a survey?
No, it is not possible. All questions will be automatically numbered other than descriptive text questions which are not numbered at all.
It would be interesting to learn the rationale for wanting to change the automatic numbering?
The rationale is we want to have a second part to a question.
For example you might have question 16a and then question 16b.
Or two questions that are grouped under question 16.
I see. Yeah, that isn’t really possible. But what you can do is use descriptive text questions and then set hem as headings or use markdown to achieve the same so that you can partition a survey into multiple parts that way. Typically you would also use a page break prior to that descriptive text question so each section would start on a new page.