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 511-520 of 604 questions.
If (m=2) and (n=-3), what is the value of \(2m^2n+mn^2\)?
B. (-6)
(2m-2n=2(4)(-3)=-24) और (mn-2=2(9)=18) है। कुल मान (-6) है। / (2m-2n=2(4)(-3)=-24) and (mn-2=2(9)=18). The total value is (-6).
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Which expression represents subtracting (3) times (ab) from the square of the sum of (a) and (b)?
C. ((a+b)2-3ab)
पहले योग (a+b) का वर्ग लिया जाएगा और फिर (3ab) घटेगा। इसलिए ((a+b)2-3ab) सही है। / First square the sum (a+b), then subtract (3ab). Therefore, ((a+b)2-3ab) is correct.
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After simplifying \(8x^2y-5xy^2-3x^2y+7xy^2\), what will be the coefficient of \(xy^2\)?
A. (2)
\(xy^2\) वाले पद \(-5xy^2\) और \(7xy^2\) हैं। इनका योग \(2xy^2\) है। / The \(xy^2\) terms are \(-5xy^2\) and \(7xy^2\). Their sum is \(2xy^2\).
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What is obtained after simplifying (5x-(2x-(4x+3)))?
C. (7x+3)
अंदर (2x-(4x+3)=-2x-3) है। इसलिए (5x-(-2x-3)=7x+3)। / Inside, (2x-(4x+3)=-2x-3). Hence (5x-(-2x-3)=7x+3).
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If the value of \(kx^2-5x+3\) at (x=2) is (9), what is (k)?
C. (4)
मान रखने पर (4k-10+3=9) मिलता है। इससे (4k=16) और (k=4) होगा। / Substitution gives (4k-10+3=9). Thus (4k=16) and (k=4).
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Which option gives the correct group of like terms of \(x^2yz\)?
A. \(3x^2yz\), \(-7x^2yz\), \(11x^2yz\)
समान पदों में चर और उनकी घातें बिल्कुल समान होती हैं। पहले विकल्प में सभी पदों का चर भाग \(x^2yz\) है। / Like terms have exactly the same variables and powers. In the first option, every term has variable part \(x^2yz\).
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What is obtained after simplifying (2a-2+3ab-b-2-\(a^2-4ab+2b^2\))?
B. \(a^2+7ab-3b^2\)
घटाने वाले कोष्ठक के चिन्ह बदलेंगे। सरल रूप \(2a^2+3ab-b^2-a^2+4ab-2b^2=a^2+7ab-3b^2\) है। / Signs change in the subtracted bracket. The simplified form is \(2a^2+3ab-b^2-a^2+4ab-2b^2=a^2+7ab-3b^2\).
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If (x+y=9) and (xy=14), what is the value of (2(x+y)+3xy)?
C. (60)
दिए हुए पूरे व्यंजकों को सीधे रखें। (2(9)+3(14)=18+42=60)। / Substitute the given whole expressions directly. (2(9)+3(14)=18+42=60).
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What is obtained after simplifying (3r(r+2)-2r(4-r))?
A. \(5r^2-2r\)
(3r(r+2)=3r-2+6r) और (-2r(4-r)=-8r+2r-2) है। कुल \(5r^2-2r\) मिलेगा। / (3r(r+2)=3r-2+6r) and (-2r(4-r)=-8r+2r-2). The total is \(5r^2-2r\).
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How many terms remain after simplifying \(7p^2q-2pq+5pq-4p^2q+9\)?
B. (3)
सरल रूप \(3p^2q+3pq+9\) है। इसमें तीन पद रहेंगे। / The simplified form is \(3p^2q+3pq+9\). It has three terms.
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