Homework Answers
a) A U W
= A + W - A∩W
From the table of values
A = 75966 + 24596 + 37197 + 86272 = 224031
W = 37197 + 45794 = 82991
A∩W = 37197
Therefore,
A U W = 224031 + 82991 - 37197 = 269825
A U W contains 269825 partnerships
b) C U R
= C + R - C∩R
From the table of values
C = 75966 + 67838 = 143804
R = 86272 + 81100 = 167372
C∩R = 0
Therefore,
C U R = 143804 + 167372 - 0 = 311176
C U R contains 311176 partnerships
c) From the table of values
C∩B = 67838
C∩B contains 67838 partnerships
d) R' signifies the number of partnerships in all the industries except Retail Trade
Therefore,
R' = 75966 + 67838 + 24596 + 42605 + 37197 + 45794 = 293996
R' contains 293996 partnerships.
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