अनुक्रम \(2,6,12,20,\ldots\) का (n)वाँ पद कौन-सा है?

What is the (n)th term of the sequence \(2,6,12,20,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. \(n^2+n\)

Step 1

Concept

The terms are \(1\cdot2,2\cdot3,3\cdot4,\ldots\), so (a_n=n(n+1)=n-2+n). Identify the product pattern.

Step 2

Why this answer is correct

The correct answer is A. \(n^2+n\). The terms are \(1\cdot2,2\cdot3,3\cdot4,\ldots\), so (a_n=n(n+1)=n-2+n). Identify the product pattern.

Step 3

Exam Tip

पद \(1\cdot2,2\cdot3,3\cdot4,\ldots\) हैं, इसलिए (a_n=n(n+1)=n-2+n)। गुणन पैटर्न पहचानें।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(2,6,12,20,\ldots\) का (n)वाँ पद कौन-सा है? / What is the (n)th term of the sequence \(2,6,12,20,\ldots\)?

Correct Answer: A. \(n^2+n\). Explanation: पद \(1\cdot2,2\cdot3,3\cdot4,\ldots\) हैं, इसलिए (a_n=n(n+1)=n-2+n)। गुणन पैटर्न पहचानें। / The terms are \(1\cdot2,2\cdot3,3\cdot4,\ldots\), so (a_n=n(n+1)=n-2+n). Identify the product pattern.

Which concept should I revise for this Mathematics MCQ?

The terms are \(1\cdot2,2\cdot3,3\cdot4,\ldots\), so (a_n=n(n+1)=n-2+n). Identify the product pattern.

What exam hint can help solve this Mathematics question?

पद \(1\cdot2,2\cdot3,3\cdot4,\ldots\) हैं, इसलिए (a_n=n(n+1)=n-2+n)। गुणन पैटर्न पहचानें।