The following pair of sets is:
A = {2, 3, 5, 7, 11}.
B = {prime numbers < 12}.
disjoint sets
null set or empty set
equivalent sets
equal sets
A = {2, 3, 5, 7, 11}
B = {2, 3, 5, 7, 11} since these are the prime numbers < 12.
A = B. Therefore, they are equal sets.
If A={x:x=3n, n∈N,4≤n≤6} and B = {12, 15, 18}, then A and B are ___________.