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 371-380 of 604 questions.
The sides of a triangle are (2x+1), (x+6), and (3x-4). What is the expression for its perimeter?
B. (6x+3)
परिमाप सभी भुजाओं का योग है। ((2x+1)+(x+6)+(3x-4)=6x+3)। / Perimeter is the sum of all sides. ((2x+1)+(x+6)+(3x-4)=6x+3).
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What is the simplified form of (4p-[2p-{3p-(p-2)}])?
A. (4p+2)
अंदर (3p-(p-2)=2p+2), फिर (2p-(2p+2)=-2), इसलिए (4p-(-2)=4p+2)। अंदर से बाहर की ओर सरल करें। / Inside (3p-(p-2)=2p+2), then (2p-(2p+2)=-2), so (4p-(-2)=4p+2). Simplify from inside to outside.
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If (u=-1) and (v=3), what is the value of \(u^2v-uv^2+2u\)?
B. (10)
मान रखने पर (1(3)-(-1)(9)+2(-1)=10) मिलता है। \(uv^2\) के चिह्न को सावधानी से निकालें। / Substitution gives (1(3)-(-1)(9)+2(-1)=10). Find the sign of \(uv^2\) carefully.
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Which expression represents the square of the number (4) less than (x)?
C. ((x-4)2)
(4) कम संख्या (x-4) है। पूरे अंतर के वर्ग के लिए ((x-4)2) लिखते हैं। / The number (4) less than (x) is (x-4). To square the whole difference, write ((x-4)2).
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What is the simplified form of \(7x^2-2xy+5xy-3x^2\)?
A. \(4x^2+3xy\)
\(7x^2-3x^2=4x^2\) और (-2xy+5xy=3xy)। \(x^2\) और (xy) अलग चर भाग हैं। / \(7x^2-3x^2=4x^2\) and (-2xy+5xy=3xy). \(x^2\) and (xy) are different variable parts.
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If (x-y=8), what is the value of (5x-5y-6)?
A. (34)
(5x-5y-6=5(x-y)-6=5(8)-6=34)। समान गुणांक हो तो सामान्य गुणक निकालें। / (5x-5y-6=5(x-y)-6=5(8)-6=34). If coefficients are same, take the common factor.
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What is the simplified form of (3(2x-y)-2(x-3y)+4y)?
A. (4x+7y)
खोलने पर (6x-3y-2x+6y+4y=4x+7y) मिलता है। समान चर वाले पद जोड़ें। / Expanding gives (6x-3y-2x+6y+4y=4x+7y). Combine terms with the same variable.
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Which option gives the correct sum of \(x^2-3x+2\) and \(2x^2+x-5\)?
A. \(3x^2-2x-3\)
योग में \(x^2+2x^2=3x^2\), (-3x+x=-2x), और (2-5=-3) है। समान पदों को अलग-अलग जोड़ें। / In the sum, \(x^2+2x^2=3x^2\), (-3x+x=-2x), and (2-5=-3). Add like terms separately.
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If (x=0), what is the value of \(7x^3-5x^2+2x-9\)?
B. (-9)
(x=0) रखने पर चर वाले सभी पद (0) हो जाते हैं। इसलिए मान (-9) है। / Putting (x=0) makes all variable terms (0). Therefore the value is (-9).
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What is the simplified form of (2a-3[4a-2(a-5)])?
C. (-4a+30)
अंदर (4a-2a+10=2a+10), इसलिए (2a-3(2a+10)=-4a-30) नहीं बल्कि (-4a-30) है। सही चिह्नों को अंत तक रखें। / Inside (4a-2a+10=2a+10), so (2a-3(2a+10)=-4a-30). Keep signs correctly till the end.
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