After 731, students could not pass the examination if they gave wrong answers to any one of four questions: one from the "Shuhisankei," or any of the three from the basic documents ("Kyushosanjutsu," "Rokusho" and "Tenjutsu").
なお、天平3年（731年）以後は基本書（『九章算術』・『六章』・『綴術』）3問に加えて、『周髀算経』1問の計4問のうちから不正解を出すと及第は認められないこととなった。