四位数字密码有多少种可能答:- 纯数字:1234, 5826, 4868, 5252, 6548, 2045, 2011, 2020, 2030, 2050, 6024, 8654, 2943, 1357, 1963, 7563, 2954, 2305, 1548, 6565, 4545, 2525, 6487, 9547, 4521, 6321, 7896, 6846, 8953, 6210, 6321, 8654, 2030, 8989, 6565, 2124, 4563, 8652, 4931, 4857, 9462...