問題詳情
8. 有一個等差數列 
，已知 
，則下列敘述何者正確？
(A)
(B)
(C)
(D)
，已知 ，則下列敘述何者正確？(A)
(B)
(C)
(D)
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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