関連ワード:  is 3 8 a rational number    is 3 √ 8 a rational number    is 5 3 8 a rational number    is 3 1 8 a rational number    is negative 3 8 a rational number    is 2 3 8 a rational number    is sqrt 3 8 a rational number    is 3 7/8 a rational number    is 3 square root 8 a rational number    is 8 3 4 a rational number