\(यदि (U={x:x \in \mathbb{N},\ 1\le x\le 30}) और (A={x:x \in U,\ x\) 2 और 3 दोनों से विभाज्य है\(}), तो (n(A^{c})) क्या है\)?
\(If (U={x:x \in \mathbb{N},\ 1\le x\le 30}) and (A={x:x \in U,\ x\) is divisible by both 2 and \(3}), what is (n(A^{c}))\)?
Explanation opens after your attempt
Correct Answer
B. (25)
Concept
Numbers divisible by both (2) and (3) are multiples of (6), giving (5) numbers. Thus (n\(A^{c}\)=30-5=25).
Why this answer is correct
The correct answer is B. (25). Numbers divisible by both (2) and (3) are multiples of (6), giving (5) numbers. Thus (n\(A^{c}\)=30-5=25).
Exam Tip
(2) और (3) दोनों से विभाज्य संख्याएं (6) के गुणज हैं, यानी (5) संख्याएं। इसलिए (n\(A^{c}\)=30-5=25)।
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