<PRE><B>Question 513679</B>
create three sets, set A, set B, and set C by going through the items you use at work (or in your field). 
Set A will be a list of all of these items.:::{pen,pencil,snuff box}
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Create Set B, from the items in Set A that you think are essential.:::{pen,pencil}
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Create Set C, by taking the complement of Set B in Set A, i.e. all of the non-essential items.:::{snuff box}
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Are sets B and C proper subsets of set A? Explain.
Yes; Each element of B is an element of A but B is not equal to A
Yes; Each each element of C is an element of A but C is not equal to A
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Cheers,
Stan H.
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