यदि (n(A-B)=7) और (n\(A\cap B\)=3), तो (n(A)) क्या है?
If (n(A-B)=7) and (n\(A\cap B\)=3), what is (n(A))?
Explanation opens after your attempt
C. (10)
Concept
Set (A) includes only (A) and the common part, so (n(A)=7+3=10). Add all parts of circle (A).
Why this answer is correct
The correct answer is C. (10). Set (A) includes only (A) and the common part, so (n(A)=7+3=10). Add all parts of circle (A).
Exam Tip
(A) में केवल (A) और साझा भाग दोनों आते हैं, इसलिए (n(A)=7+3=10)। वृत्त (A) के सभी हिस्से जोड़ें।
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