यदि (A=\(-\infty,3]\) और \(B=[1,\infty\)) है, तो \(A\cup B\) क्या होगा?
If (A=\(-\infty,3]\) and \(B=[1,\infty\)), then what is \(A\cup B\)?
Explanation opens after your attempt
Correct Answer
A. \(\mathbb{R}\)
Concept
The first interval gives all numbers up to (3), and the second gives all numbers from (1) onward. Together they form all of \(\mathbb{R}\).
Why this answer is correct
The correct answer is A. \(\mathbb{R}\). The first interval gives all numbers up to (3), and the second gives all numbers from (1) onward. Together they form all of \(\mathbb{R}\).
Exam Tip
पहला अंतराल (3) तक और दूसरा (1) से आगे सभी संख्याएं देता है। दोनों मिलकर पूरी \(\mathbb{R}\) बनाते हैं।
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