यदि (n(A-B)=20), (n\(A\cap B\)=15) और (n(B)=47) है, तो (n(B-A)) ज्ञात कीजिए।

If (n(A-B)=20), (n\(A\cap B\)=15), and (n(B)=47), find (n(B-A)).

Explanation opens after your attempt
Correct Answer

A. (32)

Step 1

Concept

Set (B) contains (B-A) and \(A\cap B\), so (B-A=47-15=32). Do not get confused by the given (A-B).

Step 2

Why this answer is correct

The correct answer is A. (32). Set (B) contains (B-A) and \(A\cap B\), so (B-A=47-15=32). Do not get confused by the given (A-B).

Step 3

Exam Tip

(B) में (B-A) और \(A\cap B\) आते हैं, इसलिए (B-A=47-15=32)। दिए गए (A-B) से भ्रमित न हों।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A-B)=20), (n\(A\cap B\)=15) और (n(B)=47) है, तो (n(B-A)) ज्ञात कीजिए। / If (n(A-B)=20), (n\(A\cap B\)=15), and (n(B)=47), find (n(B-A)).

Correct Answer: A. (32). Explanation: (B) में (B-A) और \(A\cap B\) आते हैं, इसलिए (B-A=47-15=32)। दिए गए (A-B) से भ्रमित न हों। / Set (B) contains (B-A) and \(A\cap B\), so (B-A=47-15=32). Do not get confused by the given (A-B).

Which concept should I revise for this Mathematics MCQ?

Set (B) contains (B-A) and \(A\cap B\), so (B-A=47-15=32). Do not get confused by the given (A-B).

What exam hint can help solve this Mathematics question?

(B) में (B-A) और \(A\cap B\) आते हैं, इसलिए (B-A=47-15=32)। दिए गए (A-B) से भ्रमित न हों।