what is the number of  the episode in the season whose production code is 101? 
CREATE TABLE "table1_28358487_3" (
  "no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_viewers_million" text,
  "original_air_date" text,
  "production_code" real
);
SELECT COUNT("no") FROM "table1_28358487_3" WHERE "production_code"=101;