यदि (n\(A\cup B\)=115), (n(A)=73), (n(B)=67) और (n(U)=150) है, तो (n\(A^c\cup B^c\)) कितना होगा?
If (n\(A\cup B\)=115), (n(A)=73), (n(B)=67), and (n(U)=150), what is (n\(A^c\cup B^c\))?
Explanation opens after your attempt
D. (108)
Concept
First (n\(A\cap B\)=73+67-115=25). Then (A^c\cup B^c=\(A\cap B\)^c), so (150-25=125), hence none of the given options is correct.
Why this answer is correct
The correct answer is D. (108). First (n\(A\cap B\)=73+67-115=25). Then (A^c\cup B^c=\(A\cap B\)^c), so (150-25=125), hence none of the given options is correct.
Exam Tip
पहले (n\(A\cap B\)=73+67-115=25)। फिर (A^c\cup B^c=\(A\cap B\)^c), इसलिए (150-25=125), अतः दिए गए विकल्पों में कोई सही नहीं है।
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