यदि \(U={x:x\in \mathbb{N}, x\le 12}\) और \(A={x:x\in U, x\) (3) का गुणज है(}), तो (A') में कितने तत्व होंगे?
If \(U={x:x\in \mathbb{N}, x\le 12}\) and \(A={x:x\in U, x\) is a multiple of (3)(}), how many elements are in (A')?
Explanation opens after your attempt
Correct Answer
C. (8)
Concept
The multiples of (3) are (3,6,9,12), so (A) has (4) elements. Since (U) has (12) elements, (A') has (8) elements.
Why this answer is correct
The correct answer is C. (8). The multiples of (3) are (3,6,9,12), so (A) has (4) elements. Since (U) has (12) elements, (A') has (8) elements.
Exam Tip
(3) के गुणज (3,6,9,12) हैं, इसलिए (A) में (4) तत्व हैं। (U) में (12) तत्व हैं, अतः (A') में (8) तत्व होंगे।
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