56789能组成几个不重复四位数 分别是？

56789能组成几个不重复四位数 分别是？

能够组成的四位数有：5×4×3×2=120个。分别是：5678.5679.5687.5689.5697.56985768.5769.5786.5789.5796.57985867.5869.5876.5879.5896.58975967.5968.5976.5978.5986.59876578.6579.6587.6589.6597.65986758.6759.6785.6789.6795.67986857.6859.6875.6879.6895.68976957.6958.6975.6978.6985.69877568.7569.7586.7589.7596.75987658.7659.7685.7689.7695.76987856.7859.7865.7869.7895.78967956.7958.7965.7968.7985.79868567.8569.8576.8579.8596.85978657.8659.8675.8679.8695.86978756.8759.8765.8769.8795.87968956.8957.8965.8967.8975.89769567.9568.9576.9578.9586.95879657.9658.9675.9678.9685.96879756.9758.9765.9768.9785.97869856.9857.9865.9867.9875.9876共以上120个。