Question 898272: Proper subsets of {7,19,5,6}
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! Proper subsets with 3 items in it:
{7,19,5}, {7,19,6}, {19,5,6}, {5,6,7}
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Proper subsets with 2 items in it
{7,19}, {7,5}, {7,6}, {19,5}, {19,6}, {5,6}
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Proper subsets with 1 item in it
{7}, {19}, {5}, {6}
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Proper subsets with 0 items in it
{ } ... aka the empty set
with any set, there is only one subset that has nothing in it which is the empty set. The empty set is a subset of any set.
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Put all of these proper subsets together to get
{7,19,5}, {7,19,6}, {19,5,6}, {5,6,7}
{7,19}, {7,5}, {7,6}, {19,5}, {19,6}, {5,6}
{7}, {19}, {5}, {6}
{ }
Note: you can denote the empty set as the symbol 
There are 15 proper subsets listed above.
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