This paper explores a post-suppositional view on wh-questions and their answers with dynamic semantics. I propose a unified treatment of items like modified numerals, focus items, and wh-items: they introduce a discourse referent (dref) in a non-deterministic way and then impose definiteness tests in a delayed, post-suppositional manner at the sentential level. Thus, by asking a question like ‘who smiled’, we get the (maximally informative) dref ‘the one(s) who smiled’. An answer like ‘Mary and Max’ is considered another post-suppositional test, checking whether the dref ‘the one(s) who smiled’ is identical to (or includes) the sum Mary⊕Max. I analyze various question-related phenomena to see how far this proposal can go.