A.2
B.1
C.24/25
D.17/5
[单选题](1/19)3×42×(21/5)2×19/24×(38/7)2的值是( )。A.2B.1C.24/25D.17/5
[试题]1,3,3,5,7,9,13,15(),()A:19,21;B:19,23;C:21,23;D:27,30;
[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]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50
[单选题]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50
[单选题]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50
[单选题]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50
[单选题]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50
[单选题]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50
[单选题]1/3,1/2,7/10,19/20,( )。A.19/30B.43/40C.77/60D.59/50