say you know the answer to all the questions you're asking, and that you can trust him to do operations honestly.
As a grug brain I'd say :
1000questions aboutlizards
1000 questions about math guy.
he, in secret scores his own answers based on the answers I give him. The gives me the total score of both. He's going to say : I have 2 lists, to which I have a score of 750 to one of them and 200 to the other.