If a universal set U={3,4,5,6,7,8,9,10,11,12}A={4,6,8,10,12}B={3,5,7,9,11} then (A∪B)′ is
∅
{3,4}
{5,6,7,8}
{9,10,11,12}
A={4,6,8,10,12} and B={3,5,7,9,11}
then A∪B={3,4,5,6,7,8,9,10,11,12}
⇒(A∪B)′=∅
If ∪ = {2, 4, 6, 8, 10, 12, 14, 17}, where ∪ is Universal set
and some set A = {1, 4, 6, 9, 11, 12}
The set AC is
If A and B are subsets of the universal set U, then show that,
A⊂B⇔A∪B=B