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 281-290 of 604 questions.
Which expression represents twice the sum of the square of (x) and (5)?
C. (2\(x^2+5\))
पहले योग \(x^2+5\) बनेगा और फिर उसका दोगुना लिया जाएगा। इसलिए (2\(x^2+5\)) सही है। / First form the sum \(x^2+5\), then take twice of it. So (2\(x^2+5\)) is correct.
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What is obtained after simplifying (7(2r-3)+4(r+1))?
B. (18r-17)
खोलने पर (14r-21+4r+4) मिलता है। समान पद मिलाकर (18r-17) बनेगा। / Expanding gives (14r-21+4r+4). Combining like terms gives (18r-17).
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What is obtained after simplifying \(2ab+5a^2b-7ab+3a^2b\)?
A. \(8a^2b-5ab\)
\(5a^2b+3a^2b=8a^2b\) और (2ab-7ab=-5ab)। समान चर भाग वाले पद ही मिलते हैं। / \(5a^2b+3a^2b=8a^2b\) and (2ab-7ab=-5ab). Only terms with the same variable part combine.
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If (x=2) and (y=-1), what is the value of \(x^2+xy+y^2\)?
C. (3)
(22+2(-1)+(-1)2=4-2+1=3)। दोनों चर के मान सावधानी से रखें। / (22+2(-1)+(-1)2=4-2+1=3). Substitute both variables carefully.
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Which is the linear term in \(5x^2-3x+2\)?
C. (-3x)
रैखिक पद में चर की घात (1) होती है। यहाँ रैखिक पद (-3x) है। / A linear term has the variable with power (1). Here the linear term is (-3x).
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Which expression is equal to (2(a+b)-a)?
A. (a+2b)
(2(a+b)-a=2a+2b-a=a+2b)। पहले कोष्ठक खोलें फिर समान पद मिलाएँ। / (2(a+b)-a=2a+2b-a=a+2b). Expand first and then combine like terms.
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What is the highest power in \(4s^3-2s^2+s-8\)?
C. (3)
सबसे बड़ी घात \(s^3\) में (3) है। स्थिर पद की संख्या को घात न मानें। / The highest power is (3) in \(s^3\). Do not treat the number in the constant term as a power.
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What is the numerical coefficient in \(6x^2y\)?
C. (6)
संख्यात्मक गुणांक वह संख्या है जो चर भाग से गुणा होती है। यहाँ यह संख्या (6) है। / The numerical coefficient is the number multiplying the variable part. Here this number is (6).
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What is obtained after simplifying (3(4x-5)-2(2x+1))?
B. (8x-17)
खोलने पर (12x-15-4x-2) मिलता है। समान पद मिलाकर (8x-17) बनेगा। / Expanding gives (12x-15-4x-2). Combining like terms gives (8x-17).
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Which expression represents five times the difference of (m) and (n)?
C. (5(m-n))
पहले अंतर (m-n) बनता है और फिर उसे (5) से गुणा करते हैं। इसलिए (5(m-n)) सही है। / First the difference (m-n) is formed and then it is multiplied by (5). So (5(m-n)) is correct.
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