1.

Given that F = A’B’ + C + D’ + E’, Which of the following represents the only correct expression for F’?(a)  F’ = A + B + C + D + E(b)  F’ = ABCDE(c)  F’ = AB(C + D + E)(d)  F’ = AB + C’ + D’ + E’(e)  F’ = (A + B)CDE

Answer»

F = A'B'+ C'+ D'+ E'

Taking complement on both sides:

F’ = (A'B'+ C'+ D'+ E')’ =(A’B’)’.(C’)’(D’)’(E’)’ 

=(A+B).C.D.E

So, (A + B)CDE represents correct expression for F’



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