MATH 140 In Class Exercise 6
Names____________________________________________________________
1. In each of the following find examples of sets A and B that are subsets of the set U={1,2,3,…10} and satisfy the given property or condition. If it is impossible to find such sets write – impossible.
a) 
a)______________________________
b) 
b) ______________________________
c) 
c)
______________________________
d) 
d)
______________________________
e) n(A)=6,
n(B)=6, and 
e)
______________________________
f) 
f) ______________________________
g) 
g) ______________________________
h) 
h) ______________________________
2. Let the Universe U be the alphabet. Let A be the set of letters in NORTH CAROLINA, B the set of letters in SOUTH DAKOTA, and C the set of letters in PENNSYLVANIA. Fill in the venn diagram below with this data.
3. Let A = {1,2,3}, B = {1,2,a,b}, and C = {1,a,b,c,d}.
Find two elements from each of the following sets:
a) 
a)_________
b) 
b)_________
c) 
c)_________