21. 如圖所示中的 F(A,B,C)=
(A)Σ(0,1,2,3)
(B)Σ(0,2,4,5)
(C)Σ(1,4,6,7)
(D)Σ(1,2,4,5)
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統計: A(1), B(3), C(7), D(2), E(0) #1405976
統計: A(1), B(3), C(7), D(2), E(0) #1405976