यदि (p) परिमेय है और (q) अपरिमेय है, तो (p-q) कैसी संख्या होगी?
If (p) is rational and (q) is irrational, what type of number is (p-q)?
Explanation opens after your attempt
B. हमेशा अपरिमेयAlways irrational
Concept
परिमेय संख्या में से अपरिमेय संख्या घटाने पर अपरिमेय भाग बचता है। / Subtracting an irrational number from a rational number leaves an irrational part.
Why this answer is correct
यदि परिणाम परिमेय हो, तो (q=p-(p-q)) परिमेय हो जाएगा, जो गलत है। / If the result were rational, then (q=p-(p-q)) would be rational, which is impossible.
Exam Tip
परिमेय और अपरिमेय के जोड़-घटाव के नियम याद रखें। / Remember the rules for addition and subtraction of rational and irrational numbers.
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