What was the airdate of episode number 18?
CREATE TABLE table_24910742_1 (original_air_date VARCHAR, no_in_season VARCHAR)
SELECT original_air_date FROM table_24910742_1 WHERE no_in_season = 18
### Context: CREATE TABLE table_24910742_1 (original_air_date VARCHAR, no_in_season VARCHAR) ### Question: What was the airdate of episode number 18? ### Answer: SELECT original_air_date FROM table_24910742_1 WHERE no_in_season = 18