Muft Shiksha
Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
Class 10MathematicsSetsOperations on Sets (Union, Intersection, Difference)MediumLevel 18

Which expression is equal to (A ∪ B) − A?

Advertisement

Answer and explanation

Correct answer: B − A

The union A ∪ B contains all elements from A and B. Removing A eliminates every element that belongs to A, including the common elements A ∩ B. What remains are precisely the elements that belong to B but not to A, which is B − A. Therefore, (A ∪ B) − A = B − A, so option B is correct.

Tags

setsunionset-differenceset-identitiesOperations on Sets (UnionIntersectionDifference)operations on sets union intersection differenceMathematicsClass 10 MCQ

Frequently asked questions

What is the correct answer to this question?

B − A

Why is this the correct answer?

The union A ∪ B contains all elements from A and B. Removing A eliminates every element that belongs to A, including the common elements A ∩ B. What remains are precisely the elements that belong to B but not to A, which is B − A. Therefore, (A ∪ B) − A = B − A, so option B is correct.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Sets. Topic: Operations on Sets (Union, Intersection, Difference).

Report question
Advertisement