问题
选择题
若Sn是等差数列{an}的前n项和，且S8－S3＝10，则S11的值为
A．12
B．18
C．22
D．44
答案
答案：C
，
，
，
故选C
搜题请搜索小程序“爱下问搜题”
若Sn是等差数列{an}的前n项和，且S8－S3＝10，则S11的值为
A．12
B．18
C．22
D．44
答案：C
，，
，
故选C
| 选用方框内所给词的适当形式填空。 | |
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