यदि (n(A)=30), (n(B)=28) और (n\(A\cup B\)=52) है, तो (n(A-B)) कितना है?

If (n(A)=30), (n(B)=28) and (n\(A\cup B\)=52), then what is (n(A-B))?

Explanation opens after your attempt
Correct Answer

A. (24)

Step 1

Concept

First (n\(A\cap B\)=30+28-52=6), then (A-B=30-6=24). Identify the common part before finding difference.

Step 2

Why this answer is correct

The correct answer is A. (24). First (n\(A\cap B\)=30+28-52=6), then (A-B=30-6=24). Identify the common part before finding difference.

Step 3

Exam Tip

पहले (n\(A\cap B\)=30+28-52=6), फिर (A-B=30-6=24) है। अंतर निकालने से पहले साझा भाग पहचानें।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=30), (n(B)=28) और (n\(A\cup B\)=52) है, तो (n(A-B)) कितना है? / If (n(A)=30), (n(B)=28) and (n\(A\cup B\)=52), then what is (n(A-B))?

Correct Answer: A. (24). Explanation: पहले (n\(A\cap B\)=30+28-52=6), फिर (A-B=30-6=24) है। अंतर निकालने से पहले साझा भाग पहचानें। / First (n\(A\cap B\)=30+28-52=6), then (A-B=30-6=24). Identify the common part before finding difference.

Which concept should I revise for this Mathematics MCQ?

First (n\(A\cap B\)=30+28-52=6), then (A-B=30-6=24). Identify the common part before finding difference.

What exam hint can help solve this Mathematics question?

पहले (n\(A\cap B\)=30+28-52=6), फिर (A-B=30-6=24) है। अंतर निकालने से पहले साझा भाग पहचानें।