the answer i got to moish’s question was that the point isn’t that you didn’t know the answer before & now you’re learning it for the first time. but that asking & then answering is the way we talk about it. i think like when someone tells a dvar torah, they ask a question & then answer it, it’s a way of making a point.
about echad mi yodea, i get all the others but what does 9 have to do with anything?