Expert Mathematics Sequences and Progressions Class 9 Level 43

यदि \(a_n=2n^2+5n\) है तो कौन सा पद (403) है?

If \(a_n=2n^2+5n\), which term is (403)?

Explanation opens after your attempt
Correct Answer

B. (13)वाँ(13)th

Step 1

Concept

\(2\times13^2+5\times13=403\), so it is the (13)th term. Exam tip: substitute the options into the formula.

Step 2

Why this answer is correct

The correct answer is B. (13)वाँ / (13)th. \(2\times13^2+5\times13=403\), so it is the (13)th term. Exam tip: substitute the options into the formula.

Step 3

Exam Tip

\(2\times13^2+5\times13=403\) है इसलिए यह (13)वाँ पद है। पद पहचानने के लिए विकल्पों को सूत्र में रखें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=2n^2+5n\) है तो कौन सा पद (403) है? / If \(a_n=2n^2+5n\), which term is (403)?

Correct Answer: B. (13)वाँ / (13)th. Explanation: \(2\times13^2+5\times13=403\) है इसलिए यह (13)वाँ पद है। पद पहचानने के लिए विकल्पों को सूत्र में रखें। / \(2\times13^2+5\times13=403\), so it is the (13)th term. Exam tip: substitute the options into the formula.

Which concept should I revise for this Mathematics MCQ?

\(2\times13^2+5\times13=403\), so it is the (13)th term. Exam tip: substitute the options into the formula.

What exam hint can help solve this Mathematics question?

\(2\times13^2+5\times13=403\) है इसलिए यह (13)वाँ पद है। पद पहचानने के लिए विकल्पों को सूत्र में रखें।

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