1到48中取2到4个不同的数连成4位数, 共多少个不同的四...

1056,1057,1058,1059,1061,1062,1063,1064,1065,1067,1068,1069,1071,1072,1073,1074,1075,1076,1078,1079,1081,1082,1083,1084,1085,1086,1087,1089,...7937793879397940794179427943794479457946794779488910891189128913891489158916891789188919892089218922892389248925892689278928892989308931893289338934893589368937893889398940894189428943...

十进制下,(n+1)!比n!多两位数时,n的最小值为何整数...

Lg[(n-1)!]=K+a,0≤a<1,此时(n-1)!为1+K位数.Lg[n!]=w+K+b,0≤b<1,此时n!的位数为1+w+K=1+Floor[Lg[n!]];Lg[n]...

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