If A = {2, 4} and B = {5, 6} then A x B ∪ ф will be:
{(2, 5), (4, 6)}
{(2, 5), (2, 6), (4, 5), (4, 6)}
ф
{2, 4, 5, 6}
If A = {3, 4} and B = {5, 6} then B x A is
If A∩B=B , then
If A - B = {1, 3, 7, 8}, B - A = {2, 4, 6} and A∩B={5}, then the elements of set A and B are ___ and ___ respectively.
If A = {1, 3, 5, 7, 9, 11, 13, 15, 17}, B ={2, 4, ......, 18} and N, the set of natural numbers is the universal set, then (A′∪[(A∪B)∩B′]) is
If A and B are two events such that P (A) ≠0 and
P(BA)=t, then
(a) A⊏B (b) B⊏A (c) B=ϕ (d) A=ϕ