Question 951976
subsets of P:


<pre>
	{ }
	--------
	{a}
	{w}
	{{k}}
	--------
	{a, w}
	{a, {k}}
	{w, {k}}
	--------
	{a,w,{k}}
</pre>

{ } is the empty set.


There are 8 subsets. It is not coincidental that 2^3 = 8 and there are 3 terms in set P. Be careful about how you deal with the {k}. It is not simply the element k. It is a set within a set.