For each of the sets in Exercise 7. determine whether {2} is an element of that set.

SolutionStep 1(a)Let us assume that A be a set of integer which greater than 1 A = {2, 3, 4, 5,..........}No, {2} is not an element of a set A.Step 2(b)Let us assume that B be a set of square of an integer. B = {1, 4, 9, 16,.........}No, {2} is not an element of a set B.Step 3(c)In the Question it is given a set {2, {2}}Yes, 2 is an element of a giving set.