If A = {2, 5, 8, 11} and B = {1, 5, 8, 14}, which is B \ A?
Answer and explanation
Correct answer: {1, 14}
For B \ A, retain elements of B that are not present in A. B contains 1, 5, 8, and 14. Since 5 and 8 also occur in A, remove them; 1 and 14 do not occur in A, so they remain. Thus B \ A = {1, 14}, which is option C. Option B is the intersection, option A comes from A \ B, and option D includes elements that should not be retained.
Frequently asked questions
What is the correct answer to this question?
{1, 14}
Why is this the correct answer?
For B \ A, retain elements of B that are not present in A. B contains 1, 5, 8, and 14. Since 5 and 8 also occur in A, remove them; 1 and 14 do not occur in A, so they remain. Thus B \ A = {1, 14}, which is option C. Option B is the intersection, option A comes from A \ B, and option D includes elements that should not be retained.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Operations on Sets (Union, Intersection, Difference).
