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Boolean function of five variables

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Consider the following Boolean function
$f(a, b, c, d, e) = \sum (0,1,4,5,9,13,16,20,27,31)$
The function is
(A) Independent of one variable
(B) Independent of two variables
(C) Independent of three variables
(D) Dependent on all variables
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1 Answer

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independent of 1 variable.

the minimized expression is ABDE+A'D'E'+B'D'E'
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