If A = {a, c, e} and B = {b, c, d, e}, which elements belong only to B, that is, B − A?
Answer and explanation
Correct answer: {b, d}
To find B − A, retain the elements of B and remove every element that also belongs to A. Set B contains b, c, d, and e; c and e are common with A, so they are removed. The elements left only in B are b and d. Therefore B − A = {b, d}. Option A is the common part, while option D is the union of both sets.
Frequently asked questions
What is the correct answer to this question?
{b, d}
Why is this the correct answer?
To find B − A, retain the elements of B and remove every element that also belongs to A. Set B contains b, c, d, and e; c and e are common with A, so they are removed. The elements left only in B are b and d. Therefore B − A = {b, d}. Option A is the common part, while option D is the union of both sets.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Operations on Sets (Union, Intersection, Difference).
