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GATE | GATE-CS-2014-(Set-2) | Question 65
The dual of a Boolean function f(x1, x2, … , xn, +, ∙ , ′ ), written as FD, is the same expression
as that of F with + and . swapped. F is said to be self-dual if F = FD. The number of self-dual
functions with n Boolean variables is
(A)
2n
(B)
2n-1
(C)
22n
(D)
22n-1
Answer
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