यदि \(U=\mathbb{R}\) और (A=\(-\infty,-5\)\cup[1,4]\cup\(9,\infty\)), तो (A') क्या है?
If \(U=\mathbb{R}\) and (A=\(-\infty,-5\)\cup[1,4]\cup\(9,\infty\)), what is (A')?
Explanation opens after your attempt
Correct Answer
A. ([-5,1)\cup(4,9])
Concept
The point (-5) is not in (A), (1) and (4) are in (A), and (9) is not in (A). Checking endpoints gives ([-5,1)\cup(4,9]).
Why this answer is correct
The correct answer is A. ([-5,1)\cup(4,9]). The point (-5) is not in (A), (1) and (4) are in (A), and (9) is not in (A). Checking endpoints gives ([-5,1)\cup(4,9]).
Exam Tip
(-5) (A) में नहीं है, (1) और (4) (A) में हैं, और (9) (A) में नहीं है। सिरों को देखकर पूरक ([-5,1)\cup(4,9]) होगा।
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