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 241-250 of 604 questions.
If (a=4) and (b=2), what is the value of \(a^2-b^2\)?
C. (12)
\(a^2-b^2=4^2-2^2=16-4=12\)। दोनों वर्ग अलग-अलग निकालें। / \(a^2-b^2=4^2-2^2=16-4=12\). Find both squares separately.
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What is the simplified form of \(\frac{x}{2}+x\)?
B. \(\frac{3x}{2}\)
(x) को \(\frac{2x}{2}\) लिख सकते हैं। इसलिए \(\frac{x}{2}+x=\frac{3x}{2}\)। / We can write (x) as \(\frac{2x}{2}\). Thus \(\frac{x}{2}+x=\frac{3x}{2}\).
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What is the simplified form of (4(2x-1)+3)?
A. (8x-1)
(4(2x-1)=8x-4) और (8x-4+3=8x-1)। पहले कोष्ठक खोलें। / (4(2x-1)=8x-4) and (8x-4+3=8x-1). Expand the bracket first.
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Which option gives the correct sum of (3x+2) and (x-5)?
B. (4x-3)
योग ((3x+2)+(x-5)=4x-3) है। समान पदों को जोड़ें और नियतांक अलग जोड़ें। / The sum is ((3x+2)+(x-5)=4x-3). Combine like terms and constants separately.
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What is obtained by subtracting (2x+3) from (7x-4)?
C. (5x-7)
((7x-4)-(2x+3)=7x-4-2x-3=5x-7)। घटाए गए व्यंजक के दोनों पदों का चिह्न बदलें। / ((7x-4)-(2x+3)=7x-4-2x-3=5x-7). Change the signs of both terms of the subtracted expression.
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If (x=2), what is the value of \(x^3+x\)?
C. (10)
\(x^3+x=2^3+2=8+2=10\)। घात का मान पहले निकालना चाहिए। / \(x^3+x=2^3+2=8+2=10\). The power should be evaluated first.
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Which option gives the correct expansion of (-2x(3x-4))?
A. \(-6x^2+8x\)
(-2x) को (3x) और (-4) दोनों से गुणा करें। इससे \(-6x^2+8x\) मिलेगा। / Multiply (-2x) by both (3x) and (-4). This gives \(-6x^2+8x\).
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Which expression directly shows the square of the sum of (x) and (4)?
D. ((x+4)2)
पहले योग (x+4) लिया जाता है। फिर पूरे योग का वर्ग करने के लिए ((x+4)2) लिखते हैं। / First the sum (x+4) is taken. To square the whole sum, we write ((x+4)2).
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What is the coefficient of (y) in (2x+3y+4z)?
B. (3)
(y) के साथ गुणा हुई संख्या (3) है। इसलिए (y) का गुणांक (3) है। / The number multiplied with (y) is (3). Therefore the coefficient of (y) is (3).
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If (r=5), what is the value of \(\frac{r+7}{2}\)?
C. (6)
(r=5) रखने पर \(\frac{r+7}{2}=\frac{12}{2}=6\)। भिन्न में पहले हर और अंश को सही पहचानें। / Putting (r=5), \(\frac{r+7}{2}=\frac{12}{2}=6\). In a fraction, identify numerator and denominator correctly.
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