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 negative 3 8 a rational number    is 2 3 8 a rational number    is 3 1 8 a rational number    is 34 3 8 a rational number    is sqrt 3 8 a rational number    is 4 3 8 a rational number    is 6 3/8 a rational number