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Quiz

Grade 7: Operations with sets

10 questions with solutions for grade 7: intersection, union, difference, ordered pairs, Cartesian product.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. A = {1, 2, 3, 4}, B = {3, 4, 5}. A ∩ B = ?

2. A = {1, 2, 3, 4}, B = {3, 4, 5}. How many elements has A ∪ B?

3. A = {1, 2, 3, 4}, B = {3, 4, 5}. A \ B = ?

4. A = {1, 2, 3, 4}, B = {3, 4, 5}. B \ A = ?

5. If A ∩ B = ∅, the sets A and B are:

6. Is A ∪ B = B ∪ A always true?

7. A = {1, 2}, B = {a, b, c}. How many ordered pairs are in A × B?

8. Is the ordered pair (2, 5) equal to (5, 2)?

9. n(A) = 10, n(B) = 7 and n(A ∩ B) = 3. What is n(A ∪ B)?

10. In a class 15 pupils like football, 12 like basketball and 6 like both. How many like at least one?