CREATE TABLE table_29912 ("No in series" FLOAT, "No in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" FLOAT)

How many episodes in the season had production code of 175255?
SELECT COUNT("No in season") FROM table_29912 WHERE "Production code" = '175255'
SELECT COUNT("No in season") FROM "table_29912" WHERE "Production code" = '175255'