Enter Doctor, Jailer and Wooer in the U.S. Is about 75% saltpeter 15% charcoal & 10% this element' value $400 answer ipso facto round Double Jeopardy! Show_number 4768 category THAT 1870s SHOW air_date 2008-07-03 question 'The ballet \For 'Bird' - With Love\ round Jeopardy! Show_number 3337 category MATH JOKES air_date 2006-09-20 question 'HS attended by Danny Thomas' value $600 answer Thomas Jefferson round Jeopardy! Show_number 3299 category PARTY ON!