This is the most meager cash-in attempt I've ever seen. There may well be hundreds of questions, but it'll take you a thousand games to see them all. I was receiving a couple or three repeat questions by the fifth game, and a  majority of repeats by game 10. There seems to be little or no gradual  increase in difficulty, which was proven when I saw a $500 question later  repeated as a $125,000 question later in the game.