यदि (a) परिमेय है और \(a\ne0\), तो \(a\sqrt{5}\) किस प्रकार की संख्या है?
If (a) is rational and \(a\ne0\), what type of number is \(a\sqrt{5}\)?
Explanation opens after your attempt
Correct Answer
B. हमेशा अपरिमेयAlways irrational
Concept
The product of a non-zero rational number and an irrational number remains irrational. In exams the condition \(a\ne0\) is very important.
Why this answer is correct
The correct answer is B. हमेशा अपरिमेय / Always irrational. The product of a non-zero rational number and an irrational number remains irrational. In exams the condition \(a\ne0\) is very important.
Exam Tip
अशून्य परिमेय संख्या से अपरिमेय संख्या का गुणन अपरिमेय रहता है। परीक्षा में \(a\ne0\) शर्त बहुत महत्वपूर्ण है।
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