One situation is: fill in 6 blanks, choose 8, and have 9 big questions;

Another case is: fill in the blanks (high number 4, line generation probability 1), select (high number 4, line generation probability 2), and calculate (high number 5, line generation probability 2);

In other cases, the first big question is ten, the second big question is six, and the third big question is eight.