Concept-wise Practice

constant sequence MCQ Questions for Class 10

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Practice Questions

8 questions tagged with constant sequence.

यदि \(a_n=4n+7\) है और \(c_n=a_{n+1}-a_n\), तो \(c_n\) अनुक्रम का सामान्य अंतर क्या है?

If \(a_n=4n+7\) and \(c_n=a_{n+1}-a_n\), what is the common difference of the sequence \(c_n\)?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

Here \(c_n=4\) for every (n), so its common difference is (0). In exams, treat the sequence of differences as a separate sequence.

Step 2

Why this answer is correct

The correct answer is A. (0). Here \(c_n=4\) for every (n), so its common difference is (0). In exams, treat the sequence of differences as a separate sequence.

Step 3

Exam Tip

यहां \(c_n=4\) हर (n) के लिए स्थिर है, इसलिए उसका सामान्य अंतर (0) है। परीक्षा में अंतरों के अनुक्रम को अलग अनुक्रम मानकर देखें।

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अनुक्रम \(5,5,5,5,\ldots\) के लिए सही विकल्प कौन सा है?

Which option is correct for the sequence \(5,5,5,5,\ldots\)?

Explanation opens after your attempt
Correct Answer

C. समांतर श्रेणी है और (d=0)It is an AP and (d=0)

Step 1

Concept

Every consecutive difference is (0), so it is a constant AP. In exams, treat (d=0) as a valid common difference.

Step 2

Why this answer is correct

The correct answer is C. समांतर श्रेणी है और (d=0) / It is an AP and (d=0). Every consecutive difference is (0), so it is a constant AP. In exams, treat (d=0) as a valid common difference.

Step 3

Exam Tip

हर लगातार अंतर (0) है, इसलिए यह स्थिर समांतर श्रेणी है। परीक्षा में (d=0) को भी वैध सामान्य अंतर मानें।

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यदि \(9,9,9,\ldots\) को \(2,5,8,\ldots\) से पद-दर-पद जोड़ा जाए तो नए अनुक्रम का (d) क्या होगा?

If \(9,9,9,\ldots\) is added term by term to \(2,5,8,\ldots\), what will be (d) of the new sequence?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

The constant sequence has (d=0), and the second has (d=3), so the sum has (d=3). Adding a constant sequence does not change (d).

Step 2

Why this answer is correct

The correct answer is B. (3). The constant sequence has (d=0), and the second has (d=3), so the sum has (d=3). Adding a constant sequence does not change (d).

Step 3

Exam Tip

स्थिर अनुक्रम का (d=0) है और दूसरे का (d=3) है, इसलिए योग का (d=3)। स्थिर अनुक्रम जोड़ने से (d) नहीं बदलता।

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यदि \(13, 13, 13,\ldots\) को \(1, 4, 7,\ldots\) से पद-दर-पद घटाया जाए, तो नए अनुक्रम का (d) क्या होगा?

If \(1, 4, 7,\ldots\) is subtracted term by term from \(13, 13, 13,\ldots\), what will be (d) of the new sequence?

Explanation opens after your attempt
Correct Answer

A. (-3)

Step 1

Concept

The constant sequence has (d=0), and the second has (d=3), so the new (d=0-3=-3). Even with a constant sequence, subtraction can change (d).

Step 2

Why this answer is correct

The correct answer is A. (-3). The constant sequence has (d=0), and the second has (d=3), so the new (d=0-3=-3). Even with a constant sequence, subtraction can change (d).

Step 3

Exam Tip

स्थिर अनुक्रम का (d=0) और दूसरे का (d=3) है, इसलिए नया (d=0-3=-3)। स्थिर अनुक्रम घटाव में भी (d) बदल सकता है।

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यदि \(5, 5, 5,\ldots\) को \(2, 4, 6,\ldots\) से पद-दर-पद जोड़ा जाए, तो नए अनुक्रम का (d) क्या होगा?

If \(5, 5, 5,\ldots\) is added term by term to \(2, 4, 6,\ldots\), what will be (d) of the new sequence?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

The first sequence has (d=0) and the second has (d=2), so the new (d=2). Adding a constant sequence does not change (d).

Step 2

Why this answer is correct

The correct answer is B. (2). The first sequence has (d=0) and the second has (d=2), so the new (d=2). Adding a constant sequence does not change (d).

Step 3

Exam Tip

पहले अनुक्रम का (d=0) और दूसरे का (d=2) है, इसलिए नया (d=2)। स्थिर अनुक्रम जोड़ने से (d) नहीं बदलता।

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किस अनुक्रम में सार्व अंतर (0) है?

Which sequence has common difference (0)?

Explanation opens after your attempt
Correct Answer

D. \(11,11,11,11,\ldots\)

Step 1

Concept

All terms are equal, so (d=0). A constant sequence is also considered an arithmetic progression.

Step 2

Why this answer is correct

The correct answer is D. \(11,11,11,11,\ldots\). All terms are equal, so (d=0). A constant sequence is also considered an arithmetic progression.

Step 3

Exam Tip

सभी पद समान हैं इसलिए (d=0) है। स्थिर अनुक्रम भी अंकगणितीय श्रेणी माना जाता है।

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अनुक्रम \(8,8,8,8,\ldots\) में सार्व अंतर क्या है?

What is the common difference in the sequence \(8,8,8,8,\ldots\)?

Explanation opens after your attempt
Correct Answer

B. (0)

Step 1

Concept

The common difference is (8-8=0). A sequence with equal terms has difference (0).

Step 2

Why this answer is correct

The correct answer is B. (0). The common difference is (8-8=0). A sequence with equal terms has difference (0).

Step 3

Exam Tip

सार्व अंतर (8-8=0) है। समान पदों वाली श्रेणी में अंतर (0) होता है।

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यदि सार्व अंतर (0) हो तो अंकगणितीय श्रेणी कैसी होती है?

If the common difference is (0), what type of arithmetic progression is formed?

Explanation opens after your attempt
Correct Answer

A. सभी पद समान होते हैंAll terms are equal

Step 1

Concept

When (d=0), each next term remains the same. This can also be an arithmetic progression.

Step 2

Why this answer is correct

The correct answer is A. सभी पद समान होते हैं / All terms are equal. When (d=0), each next term remains the same. This can also be an arithmetic progression.

Step 3

Exam Tip

(d=0) होने पर प्रत्येक अगला पद पहले जैसा रहता है। यह भी अंकगणितीय श्रेणी हो सकती है।

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