SOLUTION:
Alternative (B) is right. A = {a, b} and
A x A = {(a,a), (a,b),(b,b),(b,a)} Number of components = 4
Along these lines, number of subsets = 2^4 = 16.
SOLUTION:
Alternative (B) is right. A = {a, b} and
A x A = {(a,a), (a,b),(b,b),(b,a)} Number of components = 4
Along these lines, number of subsets = 2^4 = 16.