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 191-200 of 604 questions.
What is the power of (y) in the expression \(2x^2y^3\)?
B. (3)
(y) के ऊपर लिखी घात (3) है। अलग-अलग चर की घात अलग देखी जाती है। / The power written on (y) is (3). Powers of different variables are checked separately.
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Which expression represents the sum of half of (x) and (7)?
C. \(\frac{x}{2}+7\)
(x) का आधा \(\frac{x}{2}\) है और उसमें (7) जोड़ना है। इसलिए \(\frac{x}{2}+7\) सही है। / Half of (x) is \(\frac{x}{2}\), and (7) must be added to it. So \(\frac{x}{2}+7\) is correct.
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If (x=5), what is the value of \(\frac{x+3}{2}\)?
A. (4)
\(\frac{x+3}{2}=\frac{5+3}{2}=\frac{8}{2}=4\)। भिन्न में पहले अंश को सरल करें। / \(\frac{x+3}{2}=\frac{5+3}{2}=\frac{8}{2}=4\). Simplify the numerator first in a fraction.
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What is obtained after simplifying (3x+2y-x+5y)?
A. (2x+7y)
(3x-x=2x) और (2y+5y=7y)। अलग-अलग चर वाले पदों को अलग जोड़ें। / (3x-x=2x) and (2y+5y=7y). Combine terms with different variables separately.
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Which option is not equal to (2(x+4))?
C. (2x+4)
(2(x+4)) खोलने पर (2x+8) मिलता है। (2x+4) में (4) को (2) से गुणा नहीं किया गया। / Expanding (2(x+4)) gives (2x+8). In (2x+4), (4) has not been multiplied by (2).
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What condition is needed for \(a^2b\) and \(ab^2\) to be like terms?
B. चर भाग बिल्कुल समान होVariable parts must be exactly same
समान पदों के लिए चर और उनकी घातें बिल्कुल समान होनी चाहिए। यहाँ घातों की अदला-बदली से पद असमान हैं। / For like terms, variables and their powers must be exactly the same. Here swapped powers make the terms unlike.
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If (n=-1), what is the value of \(4n^2+3n-2\)?
B. (-1)
(4(-1)2+3(-1)-2=4-3-2=-1)। ऋणात्मक मान रखते समय कोष्ठक उपयोग करें। / (4(-1)2+3(-1)-2=4-3-2=-1). Use brackets while substituting a negative value.
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In (2ab+3ab-4a), which term is not a like term of (ab)?
C. (-4a)
(-4a) में केवल (a) है जबकि (ab) में (a) और (b) दोनों हैं। इसलिए यह समान पद नहीं है। / (-4a) has only (a), while (ab) has both (a) and (b). So it is not a like term.
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Which expression has the simplified form (6x-9)?
A. (3(2x-3))
(3(2x-3)=6x-9)। कोष्ठक खोलकर विकल्प जाँचें। / (3(2x-3)=6x-9). Expand the bracket to check the option.
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What is obtained after simplifying \(x^2-2x+4-x^2+5x\)?
B. (3x+4)
\(x^2-x^2=0\) और (-2x+5x=3x)। इसलिए सरल रूप (3x+4) है। / \(x^2-x^2=0\) and (-2x+5x=3x). Therefore, the simplified form is (3x+4).
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