在1~9中选择4个数进行组合,有哪几种?答:1245,1246,1247,1248,1249,1256,1257,1258,1259,1267,1268,1269,1278,1279,1289,1345,1346,1347,1348,1349,1356,1357,1358,1359,1367,1368,1369,1378,1379,1389,1456,1457,1458,1459,1467,1468,1469,1478,1479,1489,1567,1568,1569,1578,1579,1589,1678,1679,1689,1789,2345,2346,2347,2348,...
有含义的锁屏密码4个答:这个一个一个试你不会么 1234,1235,1236,1237,1238,1245,1246,1247,1248,1256,1257,1258,1267,1268,1278, 1345,1346,1347,1348,1356,1357,1358,1367,1368,1378,1456.1457.1458.1467.1468. 1478,1567,1568,1578,1678, 2345,2346,2347,...四个数字的密码全部 - 0008,0018,0028……9998. 0080...