I have a question when I create an application with questions at the end of the test how do I know the correct air number like 3

Question

I have a question when I create an application with questions at the end of the test how do I know the correct air number like 3 of 10

Answer 1

What's air number?

Answer 2

I didn't get that.can you show me the code??

Answer 3

Could you post the code?