Chapter 2 - Set Theory - 2.2 Subsets - Exercise Set 2.2 - Page 68: 56

All the subsets for the given sets are { }, {Romeo}, {Juliet}, {Romeo, Juliet}

Empty set is the subset of every set: { }, Single element subsets are: {Romeo}, {Juliet} Every set is subset of itself: {Romeo, Juliet} All the subsets for the given sets are { }, {Romeo}, {Juliet}, {Romeo, Juliet}