यदि \(U={1,2,\ldots,24}\), (A'={1,5,7,11,13,17,19,23}), तो (A) में कितने अवयव हैं?
If \(U={1,2,\ldots,24}\), (A'={1,5,7,11,13,17,19,23}), how many elements are in (A)?
Explanation opens after your attempt
C. (16)
Concept
(|U|=24) and (|A'|=8), so (|A|=24-8=16). The count of a set is found by subtracting its complement from the total.
Why this answer is correct
The correct answer is C. (16). (|U|=24) and (|A'|=8), so (|A|=24-8=16). The count of a set is found by subtracting its complement from the total.
Exam Tip
(|U|=24) और (|A'|=8), इसलिए (|A|=24-8=16)। पूरक की संख्या कुल में से घटाकर मिलती है।
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