関連ワード:  is 3 1 2 a rational number    is 3 1 2 a rational number but not an integer    is negative 3 1 2 a rational number    is 3 1 2 a rational or irrational number    is 3 1 2 a rational number yes or no    is 1 2 3 4 rational numbers    is 3 2 a rational number between 1 and 2    prove that 1 2 3 is a rational number    prove that 1 2 3 is not a rational number    show that z 1 3 2 3 is a rational number