How to say “Which of these books is the most difficult?” in JapaneseIn Japaneseこの中(なか)でどの本(ほん)が一番(いちばん)難(むずか)しい？Kono naka de dono hon ga ichiban muzukashii?▶ Hear it in JapaneseWhich of these books is the most difficult? in other languagesWhat Which of these books is the most difficult? meansIn PortugueseIn French