This is the professor response about my work.

For 3, for bcde you simply have incorrect rules listed. For ghi, the answer isn’t “fail” or “succeed”; the answer is a rule that would have to be added (or, for i, the consequences of modifying a rule).

For 5, review the rules for getNext. GetNext(T.1) moves to the next leaf node, T.1.1, with value 1 (which you have). GetNext(T.2.4) moves to the next leaf node after T.2.4, which is T.2.7; the value is 112. Continue these.

For 6, these are short answer.