Answer
see the answer
We simply adjoin the set itself to the list of its elements.
a) {1,2,3,{l,2,3}}
b) {∅}
c) {∅,{∅}}
d) {∅,{∅},{∅,{∅}}}
Work Step by Step
We simply adjoin the set itself to the list of its elements.
a) {1,2,3,{l,2,3}}
b) {∅}
c) {∅,{∅}}
d) {∅,{∅},{∅,{∅}}}