यदि \(U={x:x\in \mathbb{N}, x\leq 15}\) और \(A={x:x\) (5) का गुणज है(}), तो (n(A')) कितना होगा?
If \(U={x:x\in \mathbb{N}, x\leq 15}\) and \(A={x:x\) is a multiple of (5)(}), what is (n(A'))?
Explanation opens after your attempt
D. (12)
Concept
\(A=\{5,10,15\}\), so (n(A)=3). Since (U) has (15) elements, (n(A')=15-3=12).
Why this answer is correct
The correct answer is D. (12). \(A=\{5,10,15\}\), so (n(A)=3). Since (U) has (15) elements, (n(A')=15-3=12).
Exam Tip
\(A=\{5,10,15\}\) है, इसलिए (n(A)=3)। (U) में (15) तत्व हैं, अतः (n(A')=15-3=12)।
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