Write the subset number of set {1,2,3}.

Question

Write the subset number of set {1,2,3}

Answer 1

The subsets are;

 

{1}, {2}, {3} {1,2}, {2,3}, {1,3},

 

also every set is a subset of itself, though not a proper subset, hence {1,2,3} is also a subset ,

 

and the null set phi is a subset of every set,

 

Hence there are a total of 8 subsets