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Exercises
1. 
Verify the cardinality property
Difficulty: easy 
2

2. 
Find the n(B) and n(U)
Difficulty: easy 
2

3. 
Find the n(U) and n(A ∩ B)
Difficulty: easy 
2

4. 
Determine the number of people
Difficulty: medium 
1

5. 
Determine the number of students
Difficulty: medium 
1

6. 
Calculate the value of "x"
Difficulty: medium 
1

7. 
Determine the number of students in cultural activity
Difficulty: hard 
3

8. 
Determine the number of people who do not read the newspaper
Difficulty: hard 
1

9. 
Find the total number of students who appeared in the examination
Difficulty: hard 
1

Tests
1. 
Training test
Difficulty: medium 
4
