यदि (a_n=\frac{n(n+1)}{2}+1) है, तो \(a_5\) का मान क्या होगा?

If (a_n=\frac{n(n+1)}{2}+1), what is the value of \(a_5\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (16)

Step 1

Concept

\(a_5=\frac{5\times6}{2}+1=16\). In exams, simplify the fractional part and add (1) at the end.

Step 2

Why this answer is correct

The correct answer is B. (16). \(a_5=\frac{5\times6}{2}+1=16\). In exams, simplify the fractional part and add (1) at the end.

Step 3

Exam Tip

\(a_5=\frac{5\times6}{2}+1=16\) है। परीक्षा में भिन्न भाग सरल करके अंत में (1) जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि (a_n=\frac{n(n+1)}{2}+1) है, तो \(a_5\) का मान क्या होगा? / If (a_n=\frac{n(n+1)}{2}+1), what is the value of \(a_5\)?

Correct Answer: B. (16). Explanation: \(a_5=\frac{5\times6}{2}+1=16\) है। परीक्षा में भिन्न भाग सरल करके अंत में (1) जोड़ें। / \(a_5=\frac{5\times6}{2}+1=16\). In exams, simplify the fractional part and add (1) at the end.

Which concept should I revise for this Mathematics MCQ?

\(a_5=\frac{5\times6}{2}+1=16\). In exams, simplify the fractional part and add (1) at the end.

What exam hint can help solve this Mathematics question?

\(a_5=\frac{5\times6}{2}+1=16\) है। परीक्षा में भिन्न भाग सरल करके अंत में (1) जोड़ें।