Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Digital Electronics Logic Gates and Boolean Algebra Laws of Boolean Algebra
DeMorgan’s Theorem is
1
(AB)’ = A’ + B’
2
(AB)’ = A' + B
3
(AB)’ = A + B’
4
More than one of the above
5
None of the above