MATH 140 In Class Exercise 5 Operations on Sets
Names__________________________________________________
1. For each of the following sets A and B compute
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A |
B |
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{1,2,3,4,5} |
{3,4} |
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{1,2,3,4,5} |
{1,5,6,7,8} |
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{1,2,3} |
{1,2,3} |
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{1,2,3,4} |
{5,6,7,8} |
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What can you conclude about ? _____________
2. Let U = {1,2,3,…,10} and A = {1,2,3}. Find an example of a set B that satisfies each of the following:
a) 
and
n(B) = 2 B = ____________
b) 
and
n(B) = 5 B = ____________
c) 
B
= ____________
d) 
B
= ____________
e) A-B = A B = ____________
3. Let U = {1,2,3,…,10}, A = {1,2,3,4,5}, and B = {2,4,6,8,10}. Find each of the following sets:
a) 
= _________
b) 
= _________
c) 
= ________
d) 
= ________
e) 
= ________