Which episode had bbc ranking and canle ranking of n/a?
CREATE TABLE table_24399615_10 (episode_no VARCHAR, bbc_three_weekly_ranking VARCHAR, cable_rank VARCHAR)
SELECT COUNT(episode_no) FROM table_24399615_10 WHERE bbc_three_weekly_ranking = "N/A" AND cable_rank = "N/A"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24399615_10 (episode_no VARCHAR, bbc_three_weekly_ranking VARCHAR, cable_rank VARCHAR) Question: Which episode had bbc ranking and canle ranking of n/a? [/INST] SELECT COUNT(episode_no) FROM table_24399615_10 WHERE bbc_three_weekly_ranking = "N/A" AND cable_rank = "N/A" </s>