1—9 能分配出 几个三位数请列出来答:123,234,345,456,567,678,789,124,125,126,127,128,129,132,134,135,136,137,138,139,142,143,145,146,147,148,149,152,153,154,156,157,158,159,162,163,164,165,167,168,169,172,173,174,175,176,178,179,182,183,184,185,186,187,189,192,193,194,195,196,197,198,213,...
请列出用2、5、8、0这四个数字组成的所有四位数(数字可以重复使用)_百度...答:共有:3×4×4×4=192种 2000,2002,2005,2008,2020,2022,2025,2028,2050,2052,2055,2058,2080,2082,2085,2088,2200,2202,2205,2208,2220,2222,2225,2228,2250,2252,2255,2258,2280,2282,2285,2288,2500,2502,2505,2508,2520,2522,2525,2528,2550,2552,2555,2558,2580,2582,2585,2588,2800,...