यदि (n\(A\cap B'\)=29), (n\(A'\cap B\)=34), और (n\(A\cap B\)=21) है, तो (n\(A\cup B\)) क्या है?
If (n\(A\cap B'\)=29), (n\(A'\cap B\)=34), and (n\(A\cap B\)=21), what is (n\(A\cup B\))?
Explanation opens after your attempt
A. (84)
Concept
These three are separate regions of \(A\cup B\), so (29+34+21=84). Use the complement symbol to identify the region.
Why this answer is correct
The correct answer is A. (84). These three are separate regions of \(A\cup B\), so (29+34+21=84). Use the complement symbol to identify the region.
Exam Tip
ये तीनों \(A\cup B\) के अलग-अलग क्षेत्र हैं, इसलिए (29+34+21=84)। पूरक चिह्न से क्षेत्र पहचानें।
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