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 391-400 of 604 questions.
What is the simplified form of ((2x+3)+(4x-7)-(x+5))?
A. (5x-9)
कोष्ठक हटाने पर (2x+3+4x-7-x-5=5x-9) मिलता है। घटाए गए कोष्ठक के चिह्न बदलें। / Removing brackets gives (2x+3+4x-7-x-5=5x-9). Change signs of the subtracted bracket.
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If (p=-1), what is the value of \(p^4+2p^3-3p^2+4\)?
A. (0)
मान रखने पर (1-2-3+4=0) मिलता है। (-1) की सम घात (1) और विषम घात (-1) होती है। / Substitution gives (1-2-3+4=0). Even powers of (-1) are (1), and odd powers are (-1).
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Which option gives the correct result of subtracting (x+5y) from (4x-2y)?
A. (3x-7y)
((4x-2y)-(x+5y)=4x-2y-x-5y=3x-7y)। घटाते समय पूरे दूसरे व्यंजक के चिह्न बदलें। / ((4x-2y)-(x+5y)=4x-2y-x-5y=3x-7y). Change signs of the whole second expression while subtracting.
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What is the simplified form of \(3x^2y-5xy^2+7x^2y-2xy^2\)?
A. \(10x^2y-7xy^2\)
\(3x^2y+7x^2y=10x^2y\) और \(-5xy^2-2xy^2=-7xy^2\)। घातें समान हों तभी पद समान होते हैं। / \(3x^2y+7x^2y=10x^2y\) and \(-5xy^2-2xy^2=-7xy^2\). Terms are like only when powers match.
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If (q=3), what is the value of \(\frac{q^3-q}{3}\)?
A. (8)
(q=3) रखने पर \(\frac{27-3}{3}=8\) मिलता है। अंश को पहले पूरा सरल करें। / Putting (q=3) gives \(\frac{27-3}{3}=8\). Simplify the numerator completely first.
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What is the sum of four consecutive integers starting from (n)?
A. (4n+6)
चार संख्याएं (n), (n+1), (n+2), (n+3) हैं। उनका योग (4n+6) है। / The four numbers are (n), (n+1), (n+2), and (n+3). Their sum is (4n+6).
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What is the simplified form of (2(3x-4)-[x-2(1-x)])?
A. (3x-6)
अंदर (x-2+2x=3x-2), इसलिए (6x-8-(3x-2)=3x-6)। पहले वर्ग कोष्ठक के अंदर सरल करें। / Inside (x-2+2x=3x-2), so (6x-8-(3x-2)=3x-6). Simplify inside the square bracket first.
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If (x=2) and (y=1), what is the value of (2(x+y)2-3xy)?
B. (15)
मान रखने पर (2(3)2-3(2)(1)=18-6=12) नहीं बल्कि (12) है। गणना में कोष्ठक पहले करें। / Substitution gives (2(3)2-3(2)(1)=18-6=12). Evaluate brackets first.
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If (x=2) and (y=1), what is the correct value of (2(x+y)2-3xy)?
A. (12)
(2(x+y)2-3xy=2(3)2-3(2)(1)=18-6=12)। कोष्ठक और वर्ग पहले निकालें। / (2(x+y)2-3xy=2(3)2-3(2)(1)=18-6=12). Evaluate brackets and squares first.
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Which option gives the correct simplified form of (2a-3b+5a+7b-4a)?
A. (3a+4b)
(2a+5a-4a=3a) और (-3b+7b=4b)। समान चर के पद ही मिलाएं। / (2a+5a-4a=3a) and (-3b+7b=4b). Combine only terms with the same variable.
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