求等差級數4＋7＋10＋……＋100的和為何？ (A) (B) (C) (D) 1568

問題詳情

4. 求等差級數4＋7＋10＋……＋100的和為何？
(A)
(B)
(C)
(D) 1568

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無參考答案

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