Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.
Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.
Showing 421-430 of 600 questions.
Which is the smallest set containing (-4)?
C. पूर्णांकInteger
(-4) एक पूर्णांक है। यह प्राकृतिक या पूर्ण संख्या नहीं है। / (-4) is an integer. It is not natural or whole.
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What is the value of \(\sqrt{48}-2\sqrt{3}\)?
B. \(4\sqrt{3}\)
\(\sqrt{48}=4\sqrt{3}\) इसलिए परिणाम \(2\sqrt{3}\) है। सरल रूप पहले निकालें। / \(\sqrt{48}=4\sqrt{3}\), giving \(2\sqrt{3}\). Simplify first.
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If (a) is rational and (b) is irrational then (a+b) is generally?
B. अपरिमेयIrrational
परिमेय में अपरिमेय जोड़ने पर अपरिमेय प्राप्त होता है। यह महत्वपूर्ण गुण है। / Adding a rational to an irrational gives an irrational number. This is a key property.
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What is the value of \(\sqrt{81}+\sqrt{1}\)?
C. 10
\(\sqrt{81}=9\) और \(\sqrt{1}=1\)। योग 10 है। / \(\sqrt{81}=9\) and \(\sqrt{1}=1\). Sum is 10.
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Which number has a terminating decimal expansion?
B. \(\frac{13}{40}\)
हर में केवल 2 और 5 के गुणनखंड होने चाहिए। \(40=2^3\times5\)। / The denominator must have only factors 2 and 5. \(40=2^3\times5\).
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What is the simplified form of \(\sqrt{20}+\sqrt{5}\)?
B. \(5\sqrt{5}\)
\(\sqrt{20}=2\sqrt{5}\) इसलिए योग \(3\sqrt{5}\) है। समान मूल जोड़ें। / \(\sqrt{20}=2\sqrt{5}\), hence the sum is \(3\sqrt{5}\). Combine like surds.
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What is the value of \(\sqrt{50}-\sqrt{8}\)?
C. \(3\sqrt{2}\)
\(\sqrt{50}=5\sqrt{2}\) और \(\sqrt{8}=2\sqrt{2}\)। अंतर \(3\sqrt{2}\) है। / \(\sqrt{50}=5\sqrt{2}\) and \(\sqrt{8}=2\sqrt{2}\). Difference is \(3\sqrt{2}\).
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Which number is not a real number?
C. \(\sqrt{-4}\)
ऋणात्मक संख्या का वर्गमूल वास्तविक नहीं होता। वास्तविक संख्याओं की सीमा याद रखें। / The square root of a negative number is not real. Remember the scope of real numbers.
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If \(x=\sqrt{6}\) then what is \(x\times x\)?
B. 6
(\(\sqrt{6}\)2=6)। वर्ग और वर्गमूल परस्पर व्युत्क्रम हैं। / (\(\sqrt{6}\)2=6). Square and square root are inverse operations.
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Which option is an example of rational numbers?
C. \(\frac{5}{8},-7\)
दोनों संख्याएँ परिमेय हैं। भिन्न और पूर्णांक परिमेय होते हैं। / Both numbers are rational. Fractions and integers are rational.
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