Create three sets, set A, set 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 subsets of set A? Explain.© BrainMass Inc. brainmass.com October 10, 2019, 2:51 am ad1c9bdddf
List of essential and non-essential items in a wallet is fully evaluated.