यदि (n(A)=18), (n(B)=14) और (n\(A\cap B\)=6), तो (n\(A\cup B\)) क्या है?

If (n(A)=18), (n(B)=14), and (n\(A\cap B\)=6), what is (n\(A\cup B\))?

Explanation opens after your attempt
Correct Answer

A. (26)

Step 1

Concept

Use (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)). Thus (18+14-6=26).

Step 2

Why this answer is correct

The correct answer is A. (26). Use (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)). Thus (18+14-6=26).

Step 3

Exam Tip

सूत्र (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)) लगाइए। इसलिए (18+14-6=26)।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=18), (n(B)=14) और (n\(A\cap B\)=6), तो (n\(A\cup B\)) क्या है? / If (n(A)=18), (n(B)=14), and (n\(A\cap B\)=6), what is (n\(A\cup B\))?

Correct Answer: A. (26). Explanation: सूत्र (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)) लगाइए। इसलिए (18+14-6=26)। / Use (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)). Thus (18+14-6=26).

Which concept should I revise for this Mathematics MCQ?

Use (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)). Thus (18+14-6=26).

What exam hint can help solve this Mathematics question?

सूत्र (n\(A\cup B\)=n(A)+n(B)-n\(A\cap B\)) लगाइए। इसलिए (18+14-6=26)।