CREATE TABLE table_2409041_3 (production_code VARCHAR, original_air_date VARCHAR)

How many production codes have an original airdate of November 16, 1990?
SELECT COUNT(production_code) FROM table_2409041_3 WHERE original_air_date = "November 16, 1990"
SELECT COUNT("production_code") FROM "table_2409041_3" WHERE "November 16, 1990" = "original_air_date"