Chapter 2 - Set Theory - 2.2 Subsets - Exercise Set 2.2 - Page 68: 58

All the subsets for the given sets are { }, {I}, {II}, {III}, {I,II}, {II,III}, {I,III}, {I,II,III}

Empty set is the subset of every set: { }, Single element subsets are: {I}, {II}, {III}, Two element subsets are: {I,II}, {II,III}, {I,III}, Every set is subset of itself: {I,II,III} All the subsets for the given sets are { }, {I}, {II}, {III}, {I,II}, {II,III}, {I,III}, {I,II,III}