कौन सी संख्या वास्तविक संख्या नहीं है?
Which number is not a real number?
Explanation opens after your attempt
Correct Answer
A. \(\sqrt{-4}\)
Concept
In Class 10 real numbers the square root of a negative number is not real. Note that \(\sqrt{7}\) is real irrational.
Why this answer is correct
The correct answer is A. \(\sqrt{-4}\). In Class 10 real numbers the square root of a negative number is not real. Note that \(\sqrt{7}\) is real irrational.
Exam Tip
कक्षा 10 के वास्तविक संख्याओं में ऋणात्मक संख्या की वर्गमूल वास्तविक नहीं मानी जाती। ध्यान दें \(\sqrt{7}\) वास्तविक अपरिमेय है।
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