A.4;B.5;C.6;D.9
[单选题]:1×3,2×2,1×1,2×3,1×2,2×1,1×3,…第40项为( )A.1×3 B.2×3 C.3×1 D.2×1
[单选题]1×3,2×2,1×1,2×3,1×2,2×1,1×3,…第40项为( )A.1×3 B.2×3 C.3×1 D.2×1
[单选题]:2/3,1/2,2/5,1/3,2/7,( )。A.1/4 B.1/6 C.2/11 D.2/9
[单选题]2/3,1/2,2/5,1/3,2/7,( )。A.1/4B.1/6C.2/11D.2/9
[主观题]1/2,1/6,1/12,1/30,()A.1/42;B.1/40;C.11/42;D.1/50;
[单选题]1,1/3,1/6,1/10,( )A.1/15B.1/12C.1/16D.1/20
[单选题]:1,1/3,1/6,1/10,( )。A.1/15B.1/12C.1/16D.1/20
[单选题]以下程序的输出结果是( )。A.)2,2B.)1,3C.)3,2D.)3,1
[单选题]:1/3,1/4,1/6,1/12,1/36,()。A.1/72 B.1/144 C.1/216 D.1/432
[单选题]1/3,1/4,1/6,1/12,1/36,()。A.1/72 B.1/144 C.1/216 D.1/432