UGC-NET | UGC NET CS 2018 Dec – II | Question 99

​Which of the following statements are true ?

• (i) Every logic network is equivalent to one using just NAND gates or just NOR gates.
• (ii) Boolean expressions and logic networks correspond to labelled acyclic digraphs.
• (iii) No two Boolean algebras with n atoms are isomorphic.
• (iv) Non-zero elements of finite Boolean algebras are not uniquely expressible as joins of atoms.

(A) (i) and (iv) only
(B) (i) and (ii) only
(C) (i), (ii) and (iii) only
(D) (ii), (iii) and (iv) only


Answer: (B)

Explanation:

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