अनुक्रम \(3,5,9,15,23,\ldots\) में (12)वाँ पद क्या होगा?

What will be the (12)th term in the sequence \(3,5,9,15,23,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (135)

Step 1

Concept

Here \(a_n=n^2-n+3\), so \(a_{12}=144-12+3=135\). Exam tip: identify the formula from initial differences.

Step 2

Why this answer is correct

The correct answer is B. (135). Here \(a_n=n^2-n+3\), so \(a_{12}=144-12+3=135\). Exam tip: identify the formula from initial differences.

Step 3

Exam Tip

यहाँ \(a_n=n^2-n+3\) है इसलिए \(a_{12}=144-12+3=135\) है। शुरुआती अंतरों से सूत्र पहचानें।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(3,5,9,15,23,\ldots\) में (12)वाँ पद क्या होगा? / What will be the (12)th term in the sequence \(3,5,9,15,23,\ldots\)?

Correct Answer: B. (135). Explanation: यहाँ \(a_n=n^2-n+3\) है इसलिए \(a_{12}=144-12+3=135\) है। शुरुआती अंतरों से सूत्र पहचानें। / Here \(a_n=n^2-n+3\), so \(a_{12}=144-12+3=135\). Exam tip: identify the formula from initial differences.

Which concept should I revise for this Mathematics MCQ?

Here \(a_n=n^2-n+3\), so \(a_{12}=144-12+3=135\). Exam tip: identify the formula from initial differences.

What exam hint can help solve this Mathematics question?

यहाँ \(a_n=n^2-n+3\) है इसलिए \(a_{12}=144-12+3=135\) है। शुरुआती अंतरों से सूत्र पहचानें।