यदि (n(B-A)=13) और (n\(A\cap B\)=6), तो (n(B)) क्या है?

If (n(B-A)=13) and (n\(A\cap B\)=6), what is (n(B))?

Explanation opens after your attempt
Correct Answer

C. (19)

Step 1

Concept

Set (B) contains only (B) and the common part. Therefore, (n(B)=13+6=19).

Step 2

Why this answer is correct

The correct answer is C. (19). Set (B) contains only (B) and the common part. Therefore, (n(B)=13+6=19).

Step 3

Exam Tip

(B) में केवल (B) और साझा भाग होते हैं। इसलिए (n(B)=13+6=19)।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(B-A)=13) और (n\(A\cap B\)=6), तो (n(B)) क्या है? / If (n(B-A)=13) and (n\(A\cap B\)=6), what is (n(B))?

Correct Answer: C. (19). Explanation: (B) में केवल (B) और साझा भाग होते हैं। इसलिए (n(B)=13+6=19)। / Set (B) contains only (B) and the common part. Therefore, (n(B)=13+6=19).

Which concept should I revise for this Mathematics MCQ?

Set (B) contains only (B) and the common part. Therefore, (n(B)=13+6=19).

What exam hint can help solve this Mathematics question?

(B) में केवल (B) और साझा भाग होते हैं। इसलिए (n(B)=13+6=19)।