Question 1084197
<font color="black" face="times" size="4">There are n = 4 elements in the set. So there are 2^n = 2^4 = <font color=red>16</font> different subsets possible. 


Those 16 subsets are:
{a,b,c,d}
{a,b,c}, {a,b,d}, {a,c,d}, {b,c,d}
{a,b}, {a,c}, {a,d}, {b,c}, {b,d}, {c,d}
{a}, {b}, {c}, {d}
{ }


Note: { } denotes the empty set


Each line shown above represents a grouping of sets. For example, all of the sets with 3 items in them, such as {a,b,d}, are all on the same line. This is a handy way to group things. If you wish to list it all out where each set gets its own line then you'd write it like this 


{a,b,c,d}
{a,b,c}
{a,b,d}
{a,c,d}
{b,c,d}
{a,b}
{a,c}
{a,d}
{b,c}
{b,d}
{c,d}
{a}
{b}
{c}
{d}
{}


Further Reading: <ul><li><a href="https://en.wikipedia.org/wiki/Power_set">https://en.wikipedia.org/wiki/Power_set</a></li></ul>
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