只要挑出幾項出來運算就知道這一題是瞎掰的 不會有特殊代數解法,只是大家不敢說出來 但如果認真去解這一題 仍然會得到很大的樂趣 因為電腦和計算機10位數以上運算就會有困難 如果直接以分母連乘積為公分母 得到的分子和分母是5749位數 經過約分後得到的分子是866位數 求得n= 89,4381,5998,8503,7311,8805,5793, 5109,8024,1396,0466,5067,3037,7931, 6392,1006,8914,8346,5535,2880,4165, 0914,9670,5673,9575,5321,5922,3588, 0035,3661,7279,1966,5999,7300,6802, 1782,2894,3859,6427,2343,4745,7746, 7145,4492,9156,9357,3814,4794,1559, 2609,8625,0928,9690,8284,4805,3344, 4213,7593,1858,4019,9067,0522,5465, 6582,4741,0261,2557,7016,7294,3515, 8169,0757,8442,2629,1492,8930,2388, 4704,1350,9631,0012,8605,4326,4657, 4641,9331,9307,1223,8070,9246,1994, 5674,0882,8449,0315,3840,8268,2934, 6359,3103,3994,0137,1853,4411,3541, 5134,9033,9449,0603,4242,6761,8780, 6523,9341,5951,8290,3168,7163,2769, 1756,0407,1789,1266,7394,7335,3462, 2898,2474,6007,8934,8975,3934,7338, 3597,1997,3254,6314,6932,7528,6048, 6943,0808,7340,9947,3715,0218,4721, 0649,8041,7153,7940,4937,7300,7335, 0264,7289,4675,7092,3915,5842,6801, 4637,0526,7284,8796,5720,0495,2915, 9338,3204,2810,7157,1718,9998,9106, 0480,5520,0456,6094,0467,2488,4302, 5286,4936,2184,7855,0458,3566,4202, 1556,3446,6998,4760,9067,6716,3410, 5608,9739,2996,1362,0477,4136,6232, 9769,0669,2158,6634,2988,4875,9570, 6250,7355,1680,8401,2382,9008,0001
|