CREATE TABLE table_24883 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB)

How many episodes in the series are from season 12?
SELECT "No. in series" FROM table_24883 WHERE "No. in season" = '12'
SELECT "No. in series" FROM "table_24883" WHERE "No. in season" = '12'