यदि \(U={x:x \in \mathbb{Z},1\le x\le 30}\) और \(A={x:x \in U,x \equiv 1 \pmod{4}}\), तो (n(A')) क्या है?
If \(U={x:x \in \mathbb{Z},1\le x\le 30}\) and \(A={x:x \in U,x \equiv 1 \pmod{4}}\), what is (n(A'))?
Explanation opens after your attempt
A. (22)
Concept
The elements (1,5,9,13,17,21,25,29), so (8) elements, are in (A). Hence (n(A')=30-8=22).
Why this answer is correct
The correct answer is A. (22). The elements (1,5,9,13,17,21,25,29), so (8) elements, are in (A). Hence (n(A')=30-8=22).
Exam Tip
(1,5,9,13,17,21,25,29) यानी (8) सदस्य (A) में हैं। इसलिए (n(A')=30-8=22) है।
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