UGC NET CSE | December 2013 | Part 2 | Question: 31

Question

The dual of a Boolean expression is obtained by interchanging

• A. Boolean sums and Boolean products
• B. Boolean sums and Boolean products or interchanging $0's$ and $1's$
• C. Boolean sums and Boolean products and interchanging $0's$ and $1's$
• D. Interchanging $0's$ and $1's$

Answer 1

Boolean duals are generated by simply replacing AND's with OR's , OR's with AND's , ‘1’s with ‘0’s and ‘0’s with ‘1’s. Variables and their complements are left alone. 

Hence,Option(C)Boolean sums and Boolean products and interchanging 0's and 1's.