कौन-सा विकल्प परिमेय संख्या और अपरिमेय संख्या का ऐसा गुणनफल दिखाता है जो अपरिमेय है?
Which option shows the product of a rational number and an irrational number that is irrational?
Explanation opens after your attempt
Correct Answer
B. \(6\times\sqrt{19}\)
Concept
(6) is a non-zero rational number and \(\sqrt{19}\) is irrational.
Why this answer is correct
\(6\sqrt{19}\) remains irrational.
Exam Tip
Multiplication by zero is a special case, so focus on non-zero rational factors. चरण 1: (6) अशून्य परिमेय है और \(\sqrt{19}\) अपरिमेय है। चरण 2: \(6\sqrt{19}\) अपरिमेय रहेगा। चरण 3: शून्य से गुणा करने का मामला अलग है, इसलिए अशून्य परिमेय पर ध्यान दें।
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