题目内容
(请给出正确答案)
[主观题]
34,35,69,104,()A.138 B.139 C.173 D.179
34,35,69,104,()
A.138
B.139
C.173
D.179
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34,35,69,104,()
A.138
B.139
C.173
D.179
A.138%
B.104.35%
C.35%
D.133.33%
请开始答题:
31.已知等差数列{a。}满足a2+a4=4.a3+a5=10.则它的前10项的和S10=()。
A.138
B.135
C.95
D.23