2/5, 3/7, 4/10, 6/14, 8/20, 12/28, ( )A.224/56B.14/32C.20/48D.16/40
2/5, 3/7, 4/10, 6/14, 8/20, 12/28, ( )
A.224/56
B.14/32
C.20/48
D.16/40
相关考题:
5、若某4阶行列式 D 中第3列元素依次为 -1,2,0,1,它们的余子式分别为 5,3,-7,4,则 D = 5.
2/5, 3/7, 4/10, 6/14, 8/20, 12/28, ( )
A.224/56
B.14/32
C.20/48
D.16/40