9 8 7 6 5 4 3 2 1=1 任意填写 “加减乘除" 每个符号只能使用一次..例如...9 8 可以看成98

9 8 7 6 5 4 3 2 1=1 任意填写 “加减乘除" 每个符号只能使用一次..例如...9 8 可以看成98 数字不能调乱

无解.
所有的280种情况结果都不为1
9/8*7-6+54321 = 54322.875
9*8/7-6+54321 = 54325.28571
9/8-7*6+54321 = 54280.125
9*8-7/6+54321 = 54391.83333
9/8*7-65+4321 = 4263.875
9*8/7-65+4321 = 4266.285714
9/8-7*65+4321 = 3867.125
9*8-7/65+4321 = 4392.892308
9/8*7-654+321 = -325.125
9*8/7-654+321 = -322.7142857
9/8-7*654+321 = -4255.875
9*8-7/654+321 = 392.9892966
9/8*7-6543+21 = -6514.125
9*8/7-6543+21 = -6511.714286
9/8-7*6543+21 = -45778.875
9*8-7/6543+21 = 92.99893015
9/8*7-65432+1 = -65423.125
9*8/7-65432+1 = -65420.71429
9/8-7*65432+1 = -458021.875
9*8-7/65432+1 = 72.99989302
9/8*76-5+4321 = 4401.5
9*8/76-5+4321 = 4316.947368
9/8-76*5+4321 = 3942.125
9*8-76/5+4321 = 4377.8
9/8*76-54+321 = 352.5
9*8/76-54+321 = 267.9473684
9/8-76*54+321 = -3781.875
9*8-76/54+321 = 391.5925926
9/8*76-543+21 = -436.5
9*8/76-543+21 = -521.0526316
9/8-76*543+21 = -41245.875
9*8-76/543+21 = 92.86003683
9/8*76-5432+1 = -5345.5
9*8/76-5432+1 = -5430.052632
9/8-76*5432+1 = -412829.875
9*8-76/5432+1 = 72.98600884
9/8*765-4+321 = 1177.625
9*8/765-4+321 = 317.0941176
9/8-765*4+321 = -2737.875
9*8-765/4+321 = 201.75
9/8*765-43+21 = 838.625
9*8/765-43+21 = -21.90588235
9/8-765*43+21 = -32872.875
9*8-765/43+21 = 75.20930233
9/8*765-432+1 = 429.625
9*8/765-432+1 = -430.9058824
9/8-765*432+1 = -330477.875
9*8-765/432+1 = 71.22916667
9/8*7654-3+21 = 8628.75
9*8/7654-3+21 = 18.00940685
9/8-7654*3+21 = -22939.875
9*8-7654/3+21 = -2458.333333
9/8*7654-32+1 = 8579.75
9*8/7654-32+1 = -30.99059315
9/8-7654*32+1 = -244925.875
9*8-7654/32+1 = -166.1875
9/8*76543-2+1 = 86109.875
9*8/76543-2+1 = -0.999059352
9/8-76543*2+1 = -153083.875
9*8-76543/2+1 = -38198.5
9/87*6-5+4321 = 4316.62069
9*87/6-5+4321 = 4446.5
9/87-6*5+4321 = 4291.103448
9*87-6/5+4321 = 5102.8
9/87*6-54+321 = 267.6206897
9*87/6-54+321 = 397.5
9/87-6*54+321 = -2.896551724
9*87-6/54+321 = 1103.888889
9/87*6-543+21 = -521.3793103
9*87/6-543+21 = -391.5
9/87-6*543+21 = -3236.896552
9*87-6/543+21 = 803.9889503
9/87*6-5432+1 = -5430.37931
9*87/6-5432+1 = -5300.5
9/87-6*5432+1 = -32590.89655
9*87-6/5432+1 = 783.9988954
9/87*65-4+321 = 323.7241379
9*87/65-4+321 = 329.0461538
9/87-65*4+321 = 61.10344828
9*87-65/4+321 = 1087.75
9/87*65-43+21 = -15.27586207
9*87/65-43+21 = -9.953846154
9/87-65*43+21 = -2773.896552
9*87-65/43+21 = 802.4883721
9/87*65-432+1 = -424.2758621
9*87/65-432+1 = -418.9538462
9/87-65*432+1 = -28078.89655
9*87-65/432+1 = 783.849537
9/87*654-3+21 = 85.65517241
9*87/654-3+21 = 19.19724771
9/87-654*3+21 = -1940.896552
9*87-654/3+21 = 586
9/87*654-32+1 = 36.65517241
9*87/654-32+1 = -29.80275229
9/87-654*32+1 = -20926.89655
9*87-654/32+1 = 763.5625
9/87*6543-2+1 = 675.862069
9*87/6543-2+1 = -0.880330124
9/87-6543*2+1 = -13084.89655
9*87-6543/2+1 = -2487.5
9/876*5-4+321 = 317.0513699
9*876/5-4+321 = 1893.8
9/876-5*4+321 = 301.010274
9*876-5/4+321 = 8203.75
9/876*5-43+21 = -21.94863014
9*876/5-43+21 = 1554.8
9/876-5*43+21 = -193.989726
9*876-5/43+21 = 7904.883721
9/876*5-432+1 = -430.9486301
9*876/5-432+1 = 1145.8
9/876-5*432+1 = -2158.989726
9*876-5/432+1 = 7884.988426
9/876*54-3+21 = 18.55479452
9*876/54-3+21 = 164
9/876-54*3+21 = -140.989726
9*876-54/3+21 = 7887
9/876*54-32+1 = -30.44520548
9*876/54-32+1 = 115
9/876-54*32+1 = -1726.989726
9*876-54/32+1 = 7883.3125
9/876*543-2+1 = 4.578767123
9*876/543-2+1 = 13.51933702
9/876-543*2+1 = -1084.989726
9*876-543/2+1 = 7613.5
9/8765*4-3+21 = 18.00410724
9*8765/4-3+21 = 19739.25
9/8765-4*3+21 = 9.001026811
9*8765-4/3+21 = 78904.66667
9/8765*4-32+1 = -30.99589276
9*8765/4-32+1 = 19690.25
9/8765-4*32+1 = -126.9989732
9*8765-4/32+1 = 78885.875
9/8765*43-2+1 = -0.955847119
9*8765/43-2+1 = 1833.534884
9/8765-43*2+1 = -84.99897319
9*8765-43/2+1 = 78864.5
9/87654*3-2+1 = -0.999691971
9*87654/3-2+1 = 262961
9/87654-3*2+1 = -4.999897324
9*87654-3/2+1 = 788885.5
98/7*6-5+4321 = 4400
98*7/6-5+4321 = 4430.333333
98/7-6*5+4321 = 4305
98*7-6/5+4321 = 5005.8
98/7*6-54+321 = 351
98*7/6-54+321 = 381.3333333
98/7-6*54+321 = 11
98*7-6/54+321 = 1006.888889
98/7*6-543+21 = -438
98*7/6-543+21 = -407.6666667
98/7-6*543+21 = -3223
98*7-6/543+21 = 706.9889503
98/7*6-5432+1 = -5347
98*7/6-5432+1 = -5316.666667
98/7-6*5432+1 = -32577
98*7-6/5432+1 = 686.9988954
98/7*65-4+321 = 1227
98*7/65-4+321 = 327.5538462
98/7-65*4+321 = 75
98*7-65/4+321 = 990.75
98/7*65-43+21 = 888
98*7/65-43+21 = -11.44615385
98/7-65*43+21 = -2760
98*7-65/43+21 = 705.4883721
98/7*65-432+1 = 479
98*7/65-432+1 = -420.4461538
98/7-65*432+1 = -28065
98*7-65/432+1 = 686.849537
98/7*654-3+21 = 9174
98*7/654-3+21 = 19.04892966
98/7-654*3+21 = -1927
98*7-654/3+21 = 489
98/7*654-32+1 = 9125
98*7/654-32+1 = -29.95107034
98/7-654*32+1 = -20913
98*7-654/32+1 = 666.5625
98/7*6543-2+1 = 91601
98*7/6543-2+1 = -0.895155128
98/7-6543*2+1 = -13071
98*7-6543/2+1 = -2584.5
98/76*5-4+321 = 323.4473684
98*76/5-4+321 = 1806.6
98/76-5*4+321 = 302.2894737
98*76-5/4+321 = 7767.75
98/76*5-43+21 = -15.55263158
98*76/5-43+21 = 1467.6
98/76-5*43+21 = -192.7105263
98*76-5/43+21 = 7468.883721
98/76*5-432+1 = -424.5526316
98*76/5-432+1 = 1058.6
98/76-5*432+1 = -2157.710526
98*76-5/432+1 = 7448.988426
98/76*54-3+21 = 87.63157895
98*76/54-3+21 = 155.9259259
98/76-54*3+21 = -139.7105263
98*76-54/3+21 = 7451
98/76*54-32+1 = 38.63157895
98*76/54-32+1 = 106.9259259
98/76-54*32+1 = -1725.710526
98*76-54/32+1 = 7447.3125
98/76*543-2+1 = 699.1842105
98*76/543-2+1 = 12.71639042
98/76-543*2+1 = -1083.710526
98*76-543/2+1 = 7177.5
98/765*4-3+21 = 18.5124183
98*765/4-3+21 = 18760.5
98/765-4*3+21 = 9.128104575
98*765-4/3+21 = 74989.66667
98/765*4-32+1 = -30.4875817
98*765/4-32+1 = 18711.5
98/765-4*32+1 = -126.8718954
98*765-4/32+1 = 74970.875
98/765*43-2+1 = 4.508496732
98*765/43-2+1 = 1742.488372
98/765-43*2+1 = -84.87189542
98*765-43/2+1 = 74949.5
98/7654*3-2+1 = -0.961588712
98*7654/3-2+1 = 250029.6667
98/7654-3*2+1 = -4.987196237
98*7654-3/2+1 = 750091.5
987/6*5-4+321 = 1139.5
987*6/5-4+321 = 1501.4
987/6-5*4+321 = 465.5
987*6-5/4+321 = 6241.75
987/6*5-43+21 = 800.5
987*6/5-43+21 = 1162.4
987/6-5*43+21 = -29.5
987*6-5/43+21 = 5942.883721
987/6*5-432+1 = 391.5
987*6/5-432+1 = 753.4
987/6-5*432+1 = -1994.5
987*6-5/432+1 = 5922.988426
987/6*54-3+21 = 8901
987*6/54-3+21 = 127.6666667
987/6-54*3+21 = 23.5
987*6-54/3+21 = 5925
987/6*54-32+1 = 8852
987*6/54-32+1 = 78.66666667
987/6-54*32+1 = -1562.5
987*6-54/32+1 = 5921.3125
987/6*543-2+1 = 89322.5
987*6/543-2+1 = 9.906077348
987/6-543*2+1 = -920.5
987*6-543/2+1 = 5651.5
987/65*4-3+21 = 78.73846154
987*65/4-3+21 = 16056.75
987/65-4*3+21 = 24.18461538
987*65-4/3+21 = 64174.66667
987/65*4-32+1 = 29.73846154
987*65/4-32+1 = 16007.75
987/65-4*32+1 = -111.8153846
987*65-4/32+1 = 64155.875
987/65*43-2+1 = 651.9384615
987*65/43-2+1 = 1490.976744
987/65-43*2+1 = -69.81538462
987*65-43/2+1 = 64134.5
987/654*3-2+1 = 3.527522936
987*654/3-2+1 = 215165
987/654-3*2+1 = -3.490825688
987*654-3/2+1 = 645497.5
9876/5*4-3+21 = 7918.8
9876*5/4-3+21 = 12363
9876/5-4*3+21 = 1984.2
9876*5-4/3+21 = 49399.66667
9876/5*4-32+1 = 7869.8
9876*5/4-32+1 = 12314
9876/5-4*32+1 = 1848.2
9876*5-4/32+1 = 49380.875
9876/5*43-2+1 = 84932.6
9876*5/43-2+1 = 1147.372093
9876/5-43*2+1 = 1890.2
9876*5-43/2+1 = 49359.5
9876/54*3-2+1 = 547.6666667
9876*54/3-2+1 = 177767
9876/54-3*2+1 = 177.8888889
9876*54-3/2+1 = 533303.5
98765/4*3-2+1 = 74072.75
98765*4/3-2+1 = 131685.6667
98765/4-3*2+1 = 24686.25
98765*4-3/2+1 = 395059.5