यदि (n(U)=120), (n(A')=47), तो (n(A)) क्या है?
If (n(U)=120) and (n(A')=47), what is (n(A))?
Explanation opens after your attempt
A. (73)
Concept
Since (A) and (A') together form (U), (n(A)=120-47=73). Subtract the given complement count directly.
Why this answer is correct
The correct answer is A. (73). Since (A) and (A') together form (U), (n(A)=120-47=73). Subtract the given complement count directly.
Exam Tip
क्योंकि (A) और (A') मिलकर (U) बनाते हैं, (n(A)=120-47=73)। पूरक में दिए गए आंकड़े को सीधे घटाएं।
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