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
Correct Answer

A. (28)

Step 1

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.

Step 2

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.

Step 3

Exam Tip

संघ (=) ठीक एक (+) ठीक दो (+) तीनों है, इसलिए तीनों (135-58-49=28) हैं। क्षेत्र आधारित प्रश्नों में भागों को अलग रखें।

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Mathematics Answer, Explanation and Revision Hints

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\(A\cap B\cap C\))?

Correct Answer: A. (28). Explanation: संघ (=) ठीक एक (+) ठीक दो (+) तीनों है, इसलिए तीनों (135-58-49=28) हैं। क्षेत्र आधारित प्रश्नों में भागों को अलग रखें। / 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.

Which concept should I revise for this Mathematics MCQ?

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.

What exam hint can help solve this Mathematics question?

संघ (=) ठीक एक (+) ठीक दो (+) तीनों है, इसलिए तीनों (135-58-49=28) हैं। क्षेत्र आधारित प्रश्नों में भागों को अलग रखें।