posted by Terrie .
what is the solution for this problem,create three sets, set A, B, and set C by going through the items in your wallet or purse.
Set A will be a list of all of these items.
Create Set B, from the items in Set A that you think are essential.
Create Set C, by taking the complement of Set B in Set A, i.e. All of the non-essential items in your wallet or purse.
Are sets B and C proper subset of set A? Explain.