2,13,40,61,( ) A.46.75 B.82 C.88.25 D.121
数字推理:2,13,40,61,( )A 46.75 B 82 C 88.25 D 121
2,13,40,61,( ) A.46.75 B.82 C.88.25 D.121 1,8,60,32,20,( ) A
行政能力测试数字题2,13,40,61,()A 46.75 B 82 C 88.25 D 121还有一个22,36,40
a,b,c,d>0 证(a/(b+2c+3d))+(b/(c+2d+3a))+(c/d+2a+3b))+(d/(a+2b
[a,b)×[c,d
a,b ,c ,d
已知a/b=c/d,求证a+2b/b=c+2d/d
求行列式 |a+b+c+2d a b c,d b+c+d+2a b c,d a a+c+d+2b c,d a b a+b
A+B+c=61 a+d+c=71 a+b+d=62 b+
A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = (
a+b+c+d=2a;a+b+c+d=4b;a+b+c+d=6c;a+b+c+d=8d 求a,b,c,d
A+B+C=61,A+C+D=71,A+B+D=62,B+C+D=64