यदि (n(A)=45), (n(B)=38), और केवल (A) में (19) अवयव हैं, तो (n\(A\cap B\)) क्या है?

If (n(A)=45), (n(B)=38), and only (A) has (19) elements, what is (n\(A\cap B\))?

Explanation opens after your attempt
Correct Answer

B. (26)

Step 1

Concept

Out of total (45) elements of (A), only (A) has (19). Therefore, the common part is (45-19=26).

Step 2

Why this answer is correct

The correct answer is B. (26). Out of total (45) elements of (A), only (A) has (19). Therefore, the common part is (45-19=26).

Step 3

Exam Tip

(A) के कुल (45) में केवल (A) (19) है। इसलिए साझा भाग (45-19=26) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=45), (n(B)=38), और केवल (A) में (19) अवयव हैं, तो (n\(A\cap B\)) क्या है? / If (n(A)=45), (n(B)=38), and only (A) has (19) elements, what is (n\(A\cap B\))?

Correct Answer: B. (26). Explanation: (A) के कुल (45) में केवल (A) (19) है। इसलिए साझा भाग (45-19=26) है। / Out of total (45) elements of (A), only (A) has (19). Therefore, the common part is (45-19=26).

Which concept should I revise for this Mathematics MCQ?

Out of total (45) elements of (A), only (A) has (19). Therefore, the common part is (45-19=26).

What exam hint can help solve this Mathematics question?

(A) के कुल (45) में केवल (A) (19) है। इसलिए साझा भाग (45-19=26) है।