यदि (n\(A\cup B\cup C\)=162), ठीक एक समुच्चय में (73) और ठीक दो समुच्चयों में (56) तत्व हैं, तो (n\(A\cap B\cap C\)) कितना है?
If (n\(A\cup B\cup C\)=162), exactly one set has (73) elements and exactly two sets have (56) elements, then what is (n\(A\cap B\cap C\))?
Explanation opens after your attempt
A. (33)
Concept
The union equals exactly one plus exactly two plus all three, so all three is (162-73-56=33). Keep separate regions distinct in region-based questions.
Why this answer is correct
The correct answer is A. (33). The union equals exactly one plus exactly two plus all three, so all three is (162-73-56=33). Keep separate regions distinct in region-based questions.
Exam Tip
संघ (=) ठीक एक (+) ठीक दो (+) तीनों है, इसलिए तीनों (162-73-56=33) हैं। क्षेत्र आधारित प्रश्न में अलग भागों को अलग रखें।
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