CREATE TABLE table_30814 ("Series #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" FLOAT)

How many episode titles have series number 4?
SELECT COUNT("Title") FROM table_30814 WHERE "Series #" = '4'
SELECT COUNT("Title") FROM "table_30814" WHERE "Series #" = '4'