You can apply question numbering to all or some questions in your survey at one go which helps the survey respondents know about the number of questions and the order of questions and can refer to any question given the question number at any time.
Surveys (Select Survey) » Edit » Design
By default auto-question numbering is disabled. To enable question numbering click on Display Settings and enable the toggle for Display Question Numbers
Old UI - For surveys created before September 1st, 2018:
This feature is available with the following licenses :