A.15 26
B.25 24
C.16 18
D.9 28
[主观题]19/13,1,19/13,10/22,()a.7/24;b.7/25;c.5/26;d.7/26;
[单选题]7 11 13 17 19 31 47 41 ( )A.63 B.195 C.55 D.5
[单选题]4,6,5,7,7,9,11,13,19,21,( )A. 27,29B. 32,33C. 35,37D.41,43
[单选题]1/3,4/7 ,7/11 ,2/3 ,13/19 ,( )A. 16/21B. 16/23C. 18/21D. 17/21
[单选题]4,6,5,7,7,9,11,13,19,21,( ),( )A.27,29B.32,33C.35,37D.41,43
[主观题]19/13,1,13/19,10/22,()A.7/24;B.7/25;C.5/26;D.7/26;
[单选题]1/3,4/7,7/11,2/3,13/19,( )A.16/21B.16/23C.18/21D.17/21
[单选题]1/3,4/7,7/11,2/3,13/19,()A.16/21B.16/23C.18/21D.17/21
[单选题]:[6/(1×7)]-[6/(7×13)]-[6/(13×19)]-[6/(19×25)]-……-[6/(97×103)]= ( )A.433/567B.532/653C.522/721D.436/673
[单选题]11,13,17,19,23,( )A.27B.29C.31D.33