यदि (n\(A\cup B\)=45), (n(A)=28) और (n(B)=25), तो (n\(A\cap B\)) ज्ञात कीजिए।

If (n\(A\cup B\)=45), (n(A)=28), and (n(B)=25), find (n\(A\cap B\)).

Explanation opens after your attempt
Correct Answer

A. (8)

Step 1

Concept

(n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)). Therefore (28+25-45=8).

Step 2

Why this answer is correct

The correct answer is A. (8). (n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)). Therefore (28+25-45=8).

Step 3

Exam Tip

(n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)) है। इसलिए (28+25-45=8)।

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Mathematics Answer, Explanation and Revision Hints

यदि (n\(A\cup B\)=45), (n(A)=28) और (n(B)=25), तो (n\(A\cap B\)) ज्ञात कीजिए। / If (n\(A\cup B\)=45), (n(A)=28), and (n(B)=25), find (n\(A\cap B\)).

Correct Answer: A. (8). Explanation: (n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)) है। इसलिए (28+25-45=8)। / (n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)). Therefore (28+25-45=8).

Which concept should I revise for this Mathematics MCQ?

(n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)). Therefore (28+25-45=8).

What exam hint can help solve this Mathematics question?

(n\(A\cap B\)=n(A)+n(B)-n\(A\cup B\)) है। इसलिए (28+25-45=8)।