CREATE TABLE table_26806 ("Episode no." FLOAT, "Airdate" TEXT, "Viewers" TEXT, "BBC Three weekly ranking" TEXT, "Cable rank" TEXT)

Which episode had bbc ranking and canle ranking of n/a?
SELECT COUNT("Episode no.") FROM table_26806 WHERE "BBC Three weekly ranking" = 'N/A' AND "Cable rank" = 'N/A'
SELECT COUNT("Episode no.") FROM "table_26806" WHERE "BBC Three weekly ranking" = 'N/A' AND "Cable rank" = 'N/A'