関連ワード:  is 4 5 8 a rational number    is 2 5 8 a rational number    is 5 8 a rational number between 1 2 and 3 4    is 5/8 a rational number    is 8/4 a rational number    is 8 1/4 a rational number  
結果 : is 4 5 8 a rational number