CREATE TABLE table_24560 ("No." FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "U.S. air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

How many different episode numbers are there for episodes directed by Wayne Rose?
SELECT COUNT("#") FROM table_24560 WHERE "Directed by" = 'Wayne Rose'
SELECT COUNT("#") FROM "table_24560" WHERE "Directed by" = 'Wayne Rose'