यदि (A), (B), (C) ऐसे हैं कि \(A\subseteq B\subseteq C\), तो ((C-A)-(B-A)) किसके बराबर है?
If (A), (B), (C) satisfy \(A\subseteq B\subseteq C\), then ((C-A)-(B-A)) is equal to which set?
Explanation opens after your attempt
A. (C-B)
Concept
Removing (B-A) from (C-A) leaves the elements inside (C) but outside (B). Hence the result is (C-B).
Why this answer is correct
The correct answer is A. (C-B). Removing (B-A) from (C-A) leaves the elements inside (C) but outside (B). Hence the result is (C-B).
Exam Tip
(C-A) में से (B-A) हटाने पर (B) के बाहर और (C) के अंदर वाले तत्व बचते हैं। इसलिए परिणाम (C-B) है।
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