यदि (n(A-B)=10) और (n\(A\cap B\)=7), तो (n(A)) क्या है?
If (n(A-B)=10) and (n\(A\cap B\)=7), what is (n(A))?
Explanation opens after your attempt
C. (17)
Concept
Set (A) contains only (A) and the common part. Therefore, (n(A)=10+7=17).
Why this answer is correct
The correct answer is C. (17). Set (A) contains only (A) and the common part. Therefore, (n(A)=10+7=17).
Exam Tip
(A) में केवल (A) और साझा भाग दोनों आते हैं। इसलिए (n(A)=10+7=17)।
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