A.9/16
B.3
C.32/19
D.28/17
[单选题]1+1,2+3,3+5,1+7,2+9,3+11,1+13,…第40项为( )A.1+83 B.1+81 C.1+79 D.1+77
[单选题]:2/13,4/11,2/3,8/7,2,( )。A.4/5B.4C.5/3D.3
[单选题]2/3,1/4,2/5,(),2/7,1/16,A.1/5;B.1/17;c.1/22;d.1/9
[单选题]2/3,1/4,2/5,(),2/7,1/16,A.1/5;B.1/17;C.1/22;D.1/9;
[单选题]8,-4,2,-1,( )。A.B.1C.D.
[单选题]:1+1,2+3,3+5,1+7,2+9,3+11,1+13,…第40项为( )A.1+83 B.1+81 C.1+79 D.1+77
[单选题]1,1/2,3/13,1/10,5/121,()。A. 7/144B. 3/182C. 5/169D. 9/196
[单选题]1/2,1,7/8 ,5/8 ,13/32 ,( )A. 1/4B. 15/64C. 11/64D. 7/64
[单选题]30 0 , 1 , 1 , 2 , 4 , 7 , 13 ,()A. 22B 23C 24D 25
[单选题]:0, 1, 1, 2, 4, 7, 13, ( )。A.22B.23C.24D.25