यदि \(A\setminus B=A\) है, तो कौन-सा कथन सदैव सत्य है?
If \(A\setminus B=A\), which statement is always true?
Explanation opens after your attempt
Correct Answer
A. \(A\cap B=\varnothing\)
Concept
Removing (B) from (A) still leaves (A), so (A) and (B) have no common element. Hence \(A\cap B=\varnothing\).
Why this answer is correct
The correct answer is A. \(A\cap B=\varnothing\). Removing (B) from (A) still leaves (A), so (A) and (B) have no common element. Hence \(A\cap B=\varnothing\).
Exam Tip
(A) से (B) हटाने पर भी (A) बच रहा है, इसलिए (A) और (B) में कोई साझा तत्व नहीं है। अतः \(A\cap B=\varnothing\) है।
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