· "If no" can be used for yes/no questions on forms and in questionnaires, yes. In such cases it means "If your answer is no". I'm not sure whether this is the only context in which "if no" is acceptable: we native speakers aren't taught "rules" about this type of thing.
Understanding the Context
What I can say is that I don't recall using or hearing "if no" in a conversation and can't think of a context in which it ... · The abbreviation "No." is used only in front of an actual number, e.g., No.5 Paragraph No.7 Husband No. 2 If you are using the word "number" as a regular noun, it cannot be abbreviated. The number of projects...
Image Gallery
Key Insights
A large number of problems...