Question

Find the number of subsets of the set A={1,2,3}

Answer 1

Susets are
{1}
{2}
{3}
{1,2}
{1,3}
{2,3}

Answer 2

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