在等比数列{an}中，已知a1=5，a8•a10=100，那么a17=_1．_刷题宝

题干

在等比数列{a_n}中，已知a₁=5，a₈•a₁₀=100，那么a₁₇=____．

上一题下一题 0.0难度选择题更新时间:2019-03-22 03:40:48

答案(点此获取答案解析）

20

同类题1

物质的下列性质中，需要通过化学变化才能体现的是（）

同类题2

叶圣陶在一则日记中写道：“课毕后阅报纸，见专电栏中有云：武昌已为革命党所据，新军亦起而相应。”日记所反映事件发生的时间是（）

同类题3

Woman：Can I help you ?

Anna：Yes, please .I need a new pants for school.

Woman：Ok. What colour do you want?

Anna：Blue.

Woman：How about this one?

Anna：It looks nice. How much are they?

Woman：They are fifty-four yuan.

Anna：I'll take it. How much are those yellow shoes?

Woman：Thirty-five yuan.

Anna：Great! I'll take them.

Woman：Here you are.

Anna：Thank you!

Woman: You're welcome.

同类题4

阅读下列短文，从每小题的三个选项中选出最佳答案

It is morning now. Look at the sun, it rises in the east(东方). Look at the tree, the shadow is long. It is noon now. The sun is high in the sky. It is very hot. Look at the tree. The shadow is short. It is evening now. The sun goes down in the west(西方). Look at the tree, the shadow is long again. It is night now. The moon is high in the sky. There are some stars in the sky too.

同类题5

名词变复数

child ____

Chinese ____

Japanese____

postcard ____

hobby____

小学学科试题库

初中学科试题库

高中学科试题库