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做样本不放回抽取，重复结果按一次计；正确答案应该是102种
1, 2, 3, 4 分别代表c, o, f, e
[1]=3321
[2]=4213
[3]=3342
[4]=3124
[5]=4243
[6]=4312
[7]=3424
[8]=4134
[9]=2343
[10]=1432
[11]=1332
[12]=4142
[13]=2133
[14]=2144
[15]=4234
[16]=4432
[17]=4334
[18]=1443
[19]=4321
[20]=4332
[21]=1244
[22]=4324
[23]=4433
[24]=4124
[25]=2414
[26]=3443
[27]=4331
[28]=2433
[29]=3441
[30]=1344
[31]=2441
[32]=3431
[33]=3244
[34]=3234
[35]=2434
[36]=3423
[37]=4233
[38]=4413
[39]=2413
[40]=1334
[41]=3214
[42]=3421
[43]=3324
[44]=4421
[45]=1323
[46]=2431
[47]=4214
[48]=3314
[49]=4412
[50]=4423
[51]=2443
[52]=3213
[53]=3123
[54]=2344
[55]=3442
[56]=1342
[57]=3432
[58]=4133
[59]=4343
[60]=4341
[61]=3413
[62]=1343
[63]=3312
[64]=1233
[65]=1234
[66]=4431
[67]=3132
[68]=4143
[69]=3134
[70]=2334
[71]=4231
[72]=3241
[73]=3143
[74]=1423
[75]=1442
[76]=3142
[77]=4323
[78]=2134
[79]=4132
[80]=3414
[81]=2314
[82]=1243
[83]=4123
[84]=2313
[85]=3231
[86]=1434
[87]=1433
[88]=4313
[89]=3434
[90]=2341
[91]=3144
[92]=4342
[93]=3412
[94]=3341
[95]=4241
[96]=3243
[97]=2331
[98]=2143
[99]=4314
[100]=3344
[101]=1424
[102]=1324
Num=102 |
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