यदि (n(A)=23) और (n\(A\cap B\)=9), तो केवल (A) में कितने अवयव होंगे?
If (n(A)=23) and (n\(A\cap B\)=9), how many elements will be only in (A)?
Explanation opens after your attempt
B. (14)
Concept
The number only in (A) is (23-9=14). Subtract the common part from total (A).
Why this answer is correct
The correct answer is B. (14). The number only in (A) is (23-9=14). Subtract the common part from total (A).
Exam Tip
केवल (A) की संख्या (23-9=14) है। (A) के कुल अवयवों से साझा भाग घटाएं।
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