Question 515005

<pre>
1.  { } = &#8709; = the empty set, or the null set
2.  {8}
3.  {16}
4.  {27}
5.  {31}
6.  {60}
7.  {8,16}
8.  {8,27}
9.  {8,31}
10.  {8,60}
11.  {16,27}
12.  {16,31}
13.  {16,60}
14.  {27,31}
15.  {27,60}
16.  {31,60}
17.  {8,16,27}
18.  {8,16,31}
19.  {8,16,60}
20.  {8,27,31}
21.  {8,27,60}
22.  {8,31,60}
23.  {16,27,31}
24.  {16,27,60}
25.  {16,31,60}
26.  {27,31,60}
27.  {8,16,27,31}
28.  {8,16,27,60}
29.  {8,16,31,60}
30.  {8,27,31,60}
31.  {16,27,31,60}
32.  {8,16,27,31,60}

Edwin</pre>