Question 165241
Subsets of c (16 total):


{p,l,u,s},
{p,l,u},{p,l,s},{p,u,s},{l,u,s}
{p,l},{p,u},{p,s},{l,u},{l,s},{u,s}
{p},{l},{u},{s}
{}


Note: {} denotes the empty set



To help confirm (not completely verify) that we have the right answer, notice how there are 16 subsets. It turns out that for any set A of "n" elements, the total number of subsets of set A is {{{2^n}}}. Since there are 4 elements in set c, and {{{2^4=16}}}, this helps confirm that we at least have the right number of subsets listed.