CREATE TABLE table_16964 ("Series no." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production Code" FLOAT)

What is the production code of 'surprise, surprise'?
SELECT MAX("Production Code") FROM table_16964 WHERE "Title" = 'Surprise, Surprise'
SELECT MAX("Production Code") FROM "table_16964" WHERE "Title" = 'Surprise, Surprise'