9,17,13,15,14,()   A.13B.14C.13.5D.14.5

9,17,13,15,14,()
  

A.13
B.14
C.13.5
D.14.5

参考解析

解析:做差后得8,-4,2,-1,(0.5),该数列的公比为- 的等比数列。

相关考题:

9,17,13,15,14,( )A.13B.14C.13.5D.14.5

单选题9,17,13,15,14( )A 13B 14C 13.5D 14.5

单选题9,17,13,15,14,(  )。A13B14C13.5D14.5