A set that has exactly one member is called a singleton set.
{ 1 } , { ‘a’ } , { x3 | x ∈ N , 2 < x < 3 } are all singleton sets.
A set that has exactly one member is called a singleton set.
{ 1 } , { ‘a’ } , { x3 | x ∈ N , 2 < x < 3 } are all singleton sets.