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 91-100 of 600 questions.
Which sequence starts with (5) and adds (4) each time?
B. (5,9,13,17)
(5,9,13,17) में हर बार (4) जुड़ता है। पहले पद और अंतर दोनों जाँचें। / In (5,9,13,17), (4) is added each time. Check both the first term and the difference.
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Which sequence starts with (30) and subtracts (6) each time?
A. (30,24,18,12)
(30,24,18,12) में हर बार (6) घटता है। घटते क्रम में अंतर ऋणात्मक होता है। / In (30,24,18,12), (6) is subtracted each time. In decreasing sequences, the difference is negative.
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What are the first four terms formed by \(a_n=n+2\)?
C. (3,4,5,6)
(n=1,2,3,4) रखने पर (3,4,5,6) मिलते हैं। पहले चार पदों के लिए (n=1) से शुरू करें। / Putting (n=1,2,3,4) gives (3,4,5,6). Start with (n=1) for the first four terms.
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What are the first four terms formed by \(a_n=2n-1\)?
A. (1,3,5,7)
(n=1,2,3,4) रखने पर (1,3,5,7) मिलते हैं। यह विषम संख्याओं का क्रम है। / Putting (n=1,2,3,4) gives (1,3,5,7). This is a sequence of odd numbers.
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What are the first four terms formed by \(a_n=3n\)?
B. (3,6,9,12)
(n=1,2,3,4) रखने पर (3,6,9,12) मिलते हैं। ये (3) के गुणज हैं। / Putting (n=1,2,3,4) gives (3,6,9,12). These are multiples of (3).
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What are the first four terms formed by \(a_n=n^2\)?
C. (1,4,9,16)
\(1^2,2^2,3^2,4^2\) से (1,4,9,16) मिलते हैं। वर्ग नियम में हर (n) का वर्ग लें। / \(1^2,2^2,3^2,4^2\) give (1,4,9,16). Square each (n) in a square rule.
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Using \(a_n=20-2n\), what will the first term \(a_1\) be?
C. (18)
(n=1) रखने पर \(a_1=20-2=18\) है। पहला पद हमेशा (n=1) से मिलता है। / Putting (n=1), \(a_1=20-2=18\). The first term is found by using (n=1).
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In the sequence \(12,15,18,21,\ldots\), what is \(a_2\)?
B. (15)
\(a_2\) का अर्थ दूसरा पद है। इस क्रम में दूसरा पद (15) है। / \(a_2\) means the second term. In this sequence, the second term is (15).
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In the sequence \(9,18,27,36,\ldots\), what is \(a_4\)?
C. (36)
\(a_4\) चौथे पद को दर्शाता है। यहाँ चौथा पद (36) है। / \(a_4\) represents the fourth term. Here the fourth term is (36).
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In the sequence \(5,15,25,35,\ldots\), what is \(a_1\)?
A. (5)
\(a_1\) पहला पद होता है। इस क्रम में पहला पद (5) है। / \(a_1\) is the first term. In this sequence, the first term is (5).
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