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 381-390 of 604 questions.
Which is the correct simplified form of (2a-3[4a-2(a-5)])?
B. (-4a-30)
अंदर (4a-2(a-5)=2a+10) है। इसलिए (2a-3(2a+10)=-4a-30)। / Inside (4a-2(a-5)=2a+10). Therefore (2a-3(2a+10)=-4a-30).
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If (m=3) and (n=-2), what is the value of \(m^2n-mn^2\)?
A. (-30)
मान रखने पर (9(-2)-3(4)=-18-12=-30) मिलता है। \(n^2\) धनात्मक होगा। / Substitution gives (9(-2)-3(4)=-18-12=-30). \(n^2\) will be positive.
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Which option gives the correct simplified form of (5(x+2)-[3x-{x-4}])?
A. (3x+6)
अंदर (3x-(x-4)=2x+4), इसलिए (5x+10-(2x+4)=3x+6)। अंदरूनी कोष्ठक पहले सरल करें। / Inside (3x-(x-4)=2x+4), so (5x+10-(2x+4)=3x+6). Simplify the inner bracket first.
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What is the expression for the sum of the number (2) more than (x) and the number (3) less than (x)?
A. (2x-1)
दो संख्याएं (x+2) और (x-3) हैं। उनका योग (2x-1) है। / The two numbers are (x+2) and (x-3). Their sum is (2x-1).
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What is the simplified form of \(\frac{5x}{6}-\frac{x}{3}\)?
A. \(\frac{x}{2}\)
\(\frac{x}{3}=\frac{2x}{6}\), इसलिए \(\frac{5x}{6}-\frac{2x}{6}=\frac{x}{2}\)। भिन्न पदों में समान हर बनाएं। / \(\frac{x}{3}=\frac{2x}{6}\), so \(\frac{5x}{6}-\frac{2x}{6}=\frac{x}{2}\). Make common denominators for fraction terms.
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If (x+y=5) and (x-y=1), what is the value of (2(x+y)+3(x-y))?
A. (13)
दिए गए मान रखने पर (2(5)+3(1)=13) मिलता है। पूरे कोष्ठक को एक मान की तरह उपयोग करें। / Using the given values gives (2(5)+3(1)=13). Use the whole bracket as one value.
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What is the simplified form of \(6x^2-4xy+2y^2-3x^2+9xy-y^2\)?
A. \(3x^2+5xy+y^2\)
\(x^2\), (xy), और \(y^2\) पदों को अलग जोड़ने पर \(3x^2+5xy+y^2\) मिलता है। अलग चर भागों को न मिलाएं। / Combining \(x^2\), (xy), and \(y^2\) terms separately gives \(3x^2+5xy+y^2\). Do not mix different variable parts.
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What is the simplified form of (10-[3x-2(4-x)])?
B. (18-5x)
अंदर (3x-8+2x=5x-8), इसलिए (10-(5x-8)=18-5x)। वर्ग कोष्ठक के बाहर का ऋण चिह्न ध्यान से लगाएं। / Inside (3x-8+2x=5x-8), so (10-(5x-8)=18-5x). Apply the outside negative sign carefully.
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If (t=2), what is the value of \(3t^4-2t^3+t\)?
A. (34)
मान रखने पर (3(16)-2(8)+2=34) मिलता है। बड़ी घातों को पहले निकालें। / Substitution gives (3(16)-2(8)+2=34). Evaluate higher powers first.
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Which expression adds the sum of (a) and (b) to (3) times their difference?
A. (3(a-b)+(a+b))
अंतर (a-b) है और उसका (3) गुना (3(a-b)) है। इसमें योग (a+b) जोड़ने पर (3(a-b)+(a+b)) बनता है। / The difference is (a-b), and three times it is (3(a-b)). Adding the sum (a+b) gives (3(a-b)+(a+b)).
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