数列{an}满足 an=2n(n+1) ，若前n项和 Sn>53 ，则n的最小值是_刷题宝

题干

数列{a_n}满足 an=

2

n

(

n

+

1

)

，若前n项和 Sn>

5

3

，则n的最小值是（）

A：4

B：5

C：6

D：7

上一题下一题 0.0难度选择题更新时间:2019-02-28 05:21:47

答案(点此获取答案解析）

C

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