Wait I thought earlier the Principle said that the only people to get question 5 right were Ryu and Kyu. So how did Tooyama have the same answer as Kyu?
@Pyrotrap I think Dan meant that only Kyu and Ryu answered it in detail by explaining the case with the correct clues and deductions. Kinta likely only guessed the final answer and wrote that down without detailing the individual steps.