यदि \(A=\{5,10,15\}\) और \(B=\{10,20\}\) है, तो (B-A) क्या है?
If \(A=\{5,10,15\}\) and \(B=\{10,20\}\), what is (B-A)?
Explanation opens after your attempt
B. ( {20} )
Concept
(B-A) keeps elements of (B) that are not in (A). Remember that (A-B) and (B-A) may be different.
Why this answer is correct
The correct answer is B. ( {20} ). (B-A) keeps elements of (B) that are not in (A). Remember that (A-B) and (B-A) may be different.
Exam Tip
(B-A) में (B) के वे अवयव रहते हैं जो (A) में नहीं हैं। (A-B) और (B-A) अलग हो सकते हैं।
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