What was the highest rank by average of a couple who had an average of 25.3 and had more than 10 dances?
CREATE TABLE "average" (
  "rank_by_average" real,
  "place" real,
  "couple" text,
  "total" real,
  "number_of_dances" real,
  "average" real
);
SELECT MAX("rank_by_average") FROM "average" WHERE "average"=25.3 AND "number_of_dances">10;