CREATE TABLE table_23834 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( in millions ) " CLOB)

Name the number of viewers for series number 50
SELECT "U.S. viewers (in millions)" FROM table_23834 WHERE "Series #" = '50'
SELECT "U.S. viewers (in millions)" FROM "table_23834" WHERE "Series #" = '50'