関連ワード:  is 31 8 a rational number between 3 and 4    is 5 8 a rational number between 1 2 and 3 4    is 3 over 8 a rational number    how many rational numbers are between 3 and 4    is 3√8 a rational number  
結果 : is 31 8 a rational number between 3 and 4