設 \sum_{k=1}^{10} a_k = 7,\quad \sum_{k=1}^{10} b_k = 13 \] 則 \sum_{k=1}^{10} (…

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AH-000001 · Answer

34

設 \sum_{k=1}^{10} a_k = 7,\quad \sum_{k=1}^{10} b_k = 13 \] 則 \sum_{k=1}^{10} (5a_k 3b_k - 4) = \] (A) 34 (B) 39 (C) 44 (D) 49