यदि (B-A=B), तो कौन सा निष्कर्ष सदैव सही है?
If (B-A=B), which conclusion is always correct?
Explanation opens after your attempt
Correct Answer
A. \(A\cap B=\varnothing\)
Concept
\(B-A=B\cap A'\), and if it equals (B), no element of (B) lies in (A). Hence \(A\cap B=\varnothing\).
Why this answer is correct
The correct answer is A. \(A\cap B=\varnothing\). \(B-A=B\cap A'\), and if it equals (B), no element of (B) lies in (A). Hence \(A\cap B=\varnothing\).
Exam Tip
\(B-A=B\cap A'\) है और यह (B) के बराबर है, इसलिए (B) का कोई अवयव (A) में नहीं है। अतः \(A\cap B=\varnothing\)।
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