![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[多选题]
在等比数列{ a}中,已知a4=,a6=1/4,则a5的值是()
A.2
B.-2
C.1/2或-1/2
D.2或 -2
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
12或-12
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.2
B.-2
C.1/2或-1/2
D.2或 -2
12或-12
在等比数列{ an }中,a2=6,a4=24,则a6=() (A)8 (B)24 (C)96 (D)384
等比数列{an}中,若a1 + a2 =30,a3 + a4 =120,则a5 + a6 =() (A)240 (B)480 (C)720 (D)960
在等比数列{an} 中,已知a3=7,a6=56,则该等比数列的公比是()
A.2
B.3
C.4
D.8
A.等差序列
B.等比序列
C.小数序列
D.相同的数