यदि (a_n=\frac{n(n+3)}{2}) है तो कौन सा पद (65) है?

If (a_n=\frac{n(n+3)}{2}), which term is (65)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (10)वाँ(10)th

Step 1

Concept

Since \(\frac{10\times13}{2}=65\), it is the (10)th term. Exam tip: substitute options directly into the formula.

Step 2

Why this answer is correct

The correct answer is D. (10)वाँ / (10)th. Since \(\frac{10\times13}{2}=65\), it is the (10)th term. Exam tip: substitute options directly into the formula.

Step 3

Exam Tip

\(\frac{10\times13}{2}=65\) इसलिए यह (10)वाँ पद है। विकल्पों को सीधे सूत्र में रखकर जाँच सकते हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि (a_n=\frac{n(n+3)}{2}) है तो कौन सा पद (65) है? / If (a_n=\frac{n(n+3)}{2}), which term is (65)?

Correct Answer: D. (10)वाँ / (10)th. Explanation: \(\frac{10\times13}{2}=65\) इसलिए यह (10)वाँ पद है। विकल्पों को सीधे सूत्र में रखकर जाँच सकते हैं। / Since \(\frac{10\times13}{2}=65\), it is the (10)th term. Exam tip: substitute options directly into the formula.

Which concept should I revise for this Mathematics MCQ?

Since \(\frac{10\times13}{2}=65\), it is the (10)th term. Exam tip: substitute options directly into the formula.

What exam hint can help solve this Mathematics question?

\(\frac{10\times13}{2}=65\) इसलिए यह (10)वाँ पद है। विकल्पों को सीधे सूत्र में रखकर जाँच सकते हैं।