यदि \(a_n=2n^3+n\) है तो \(a_3\) का मान क्या होगा?

If \(a_n=2n^3+n\) then what is the value of \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

D. (57)

Step 1

Concept

\(a_3=2\times27+3=57\). In exams add (n) after cubing.

Step 2

Why this answer is correct

The correct answer is D. (57). \(a_3=2\times27+3=57\). In exams add (n) after cubing.

Step 3

Exam Tip

\(a_3=2\times27+3=57\) है। परीक्षा में घन के बाद (n) जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=2n^3+n\) है तो \(a_3\) का मान क्या होगा? / If \(a_n=2n^3+n\) then what is the value of \(a_3\)?

Correct Answer: D. (57). Explanation: \(a_3=2\times27+3=57\) है। परीक्षा में घन के बाद (n) जोड़ें। / \(a_3=2\times27+3=57\). In exams add (n) after cubing.

Which concept should I revise for this Mathematics MCQ?

\(a_3=2\times27+3=57\). In exams add (n) after cubing.

What exam hint can help solve this Mathematics question?

\(a_3=2\times27+3=57\) है। परीक्षा में घन के बाद (n) जोड़ें।