यदि (n(A-B)=38) और (n(B-A)=27) है, तो (n\(A\triangle B\)) कितना होगा?

If (n(A-B)=38) and (n(B-A)=27), what is (n\(A\triangle B\))?

Explanation opens after your attempt
Correct Answer

B. (65)

Step 1

Concept

The symmetric difference includes only (A) and only (B), so (38+27=65). The common part is not included.

Step 2

Why this answer is correct

The correct answer is B. (65). The symmetric difference includes only (A) and only (B), so (38+27=65). The common part is not included.

Step 3

Exam Tip

सममित अंतर में केवल (A) और केवल (B) वाले भाग आते हैं, इसलिए (38+27=65)। साझा भाग इसमें शामिल नहीं होता।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A-B)=38) और (n(B-A)=27) है, तो (n\(A\triangle B\)) कितना होगा? / If (n(A-B)=38) and (n(B-A)=27), what is (n\(A\triangle B\))?

Correct Answer: B. (65). Explanation: सममित अंतर में केवल (A) और केवल (B) वाले भाग आते हैं, इसलिए (38+27=65)। साझा भाग इसमें शामिल नहीं होता। / The symmetric difference includes only (A) and only (B), so (38+27=65). The common part is not included.

Which concept should I revise for this Mathematics MCQ?

The symmetric difference includes only (A) and only (B), so (38+27=65). The common part is not included.

What exam hint can help solve this Mathematics question?

सममित अंतर में केवल (A) और केवल (B) वाले भाग आते हैं, इसलिए (38+27=65)। साझा भाग इसमें शामिल नहीं होता।