यदि \(A\subseteq B\) है, तो (A\cup\(B\setminus A\)) के बराबर क्या है?
If \(A\subseteq B\), then what is (A\cup\(B\setminus A\)) equal to?
Explanation opens after your attempt
A. (B)
Concept
Every element of (B) is either in (A) or in \(B\setminus A\). Therefore their union is (B).
Why this answer is correct
The correct answer is A. (B). Every element of (B) is either in (A) or in \(B\setminus A\). Therefore their union is (B).
Exam Tip
(B) के तत्व या तो (A) में हैं या \(B\setminus A\) में। इसलिए उनका संघ (B) है।
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