यदि (A-B=B-A) है, तो सही निष्कर्ष कौन-सा है?
If (A-B=B-A), which conclusion is correct?
Explanation opens after your attempt
Correct Answer
A. (A=B)
Concept
If an element lies only in (A), it is in (A-B) but not in (B-A). For equality, no such element can exist, so (A=B).
Why this answer is correct
The correct answer is A. (A=B). If an element lies only in (A), it is in (A-B) but not in (B-A). For equality, no such element can exist, so (A=B).
Exam Tip
यदि कोई तत्व केवल (A) में हो तो वह (A-B) में होगा पर (B-A) में नहीं। समानता के लिए ऐसे तत्व नहीं हो सकते, इसलिए (A=B)।
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