If U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A = {2, 3, 5, 7}, and B = {1, 4, 6, 8, 9, 10}, which statement is correct for A and B?
Answer and explanation
Correct answer: B = Aᶜ
The complement Aᶜ contains all elements of U that are absent from A. Removing 2, 3, 5, and 7 from U leaves {1, 4, 6, 8, 9, 10}, which is exactly B. Therefore, B = Aᶜ. The sets are disjoint and their union is U, but they are not equal and their intersection is not U.
Frequently asked questions
What is the correct answer to this question?
B = Aᶜ
Why is this the correct answer?
The complement Aᶜ contains all elements of U that are absent from A. Removing 2, 3, 5, and 7 from U leaves {1, 4, 6, 8, 9, 10}, which is exactly B. Therefore, B = Aᶜ. The sets are disjoint and their union is U, but they are not equal and their intersection is not U.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Complement of a Set and Its Properties.