CREATE TABLE table_275 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" FLOAT)

What is the most series number with season 3?
SELECT MAX("Series #") FROM table_275 WHERE "Season #" = '3'
SELECT MAX("Series #") FROM "table_275" WHERE "Season #" = '3'