CREATE TABLE "table1_15472061_1" (
  "no_in_series" text,
  "no_in_season" text,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text,
  "u_s_viewers_millions" text
);

Question: Name the total number of titles for 3020 production code
SQL: SELECT COUNT("title") FROM "table1_15472061_1" WHERE "production_code"='3020';

Question: Name the number in the series for when the viewers is 7.78
SQL: SELECT "no_in_series" FROM "table1_15472061_1" WHERE "u_s_viewers_millions"='7.78';

Question: Name the number of original air date for when the number in season is 10/11
SQL: SELECT COUNT("original_air_date") FROM "table1_15472061_1" WHERE "no_in_season"='10/11';