यदि \(U=\mathbb{R}\), (A=\(-\infty,1\)) और (B=\(4,\infty\)), तो (\(A \cup B\)') क्या है?
If \(U=\mathbb{R}\), (A=\(-\infty,1\)), and (B=\(4,\infty\)), what is (\(A \cup B\)')?
Explanation opens after your attempt
Correct Answer
A. ([1,4])
Concept
The set \(A \cup B\) does not include (1) and (4). Hence the complement includes both endpoints, giving ([1,4]).
Why this answer is correct
The correct answer is A. ([1,4]). The set \(A \cup B\) does not include (1) and (4). Hence the complement includes both endpoints, giving ([1,4]).
Exam Tip
\(A \cup B\) में (1) और (4) शामिल नहीं हैं। इसलिए पूरक में दोनों सिरों सहित ([1,4]) आएगा।
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