यदि (n\(A\cup B\cup C\)=135), ठीक एक समुच्चय में (58) और ठीक दो समुच्चयों में (49) तत्व हैं, तो (n\(A\cap B\cap C\)) कितना है?
If (n\(A\cup B\cup C\)=135), exactly one set has (58) elements and exactly two sets have (49) elements, then what is (n\(A\cap B\cap C\))?
Explanation opens after your attempt
A. (28)
Concept
Union equals exactly one plus exactly two plus all three, so all three is (135-58-49=28). In region-based questions, keep the parts separate.
Why this answer is correct
The correct answer is A. (28). Union equals exactly one plus exactly two plus all three, so all three is (135-58-49=28). In region-based questions, keep the parts separate.
Exam Tip
संघ (=) ठीक एक (+) ठीक दो (+) तीनों है, इसलिए तीनों (135-58-49=28) हैं। क्षेत्र आधारित प्रश्नों में भागों को अलग रखें।
Login to save your score, XP, coins and progress.
