यदि (n(A-B)=6), (n\(A\cap B\)=5), और (n(B-A)=4), तो (n\(A\cup B\)) क्या है?

If (n(A-B)=6), (n\(A\cap B\)=5), and (n(B-A)=4), what is (n\(A\cup B\))?

Explanation opens after your attempt
Correct Answer

C. (15)

Step 1

Concept

The union includes all three regions, so (6+5+4=15). In a Venn diagram, do not add the overlap twice.

Step 2

Why this answer is correct

The correct answer is C. (15). The union includes all three regions, so (6+5+4=15). In a Venn diagram, do not add the overlap twice.

Step 3

Exam Tip

संघ में तीनों क्षेत्र आते हैं, इसलिए (6+5+4=15)। वेन आरेख में ओवरलैप को दो बार न जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A-B)=6), (n\(A\cap B\)=5), और (n(B-A)=4), तो (n\(A\cup B\)) क्या है? / If (n(A-B)=6), (n\(A\cap B\)=5), and (n(B-A)=4), what is (n\(A\cup B\))?

Correct Answer: C. (15). Explanation: संघ में तीनों क्षेत्र आते हैं, इसलिए (6+5+4=15)। वेन आरेख में ओवरलैप को दो बार न जोड़ें। / The union includes all three regions, so (6+5+4=15). In a Venn diagram, do not add the overlap twice.

Which concept should I revise for this Mathematics MCQ?

The union includes all three regions, so (6+5+4=15). In a Venn diagram, do not add the overlap twice.

What exam hint can help solve this Mathematics question?

संघ में तीनों क्षेत्र आते हैं, इसलिए (6+5+4=15)। वेन आरेख में ओवरलैप को दो बार न जोड़ें।