यदि \(a_1=15\) और \(a_{n+1}=a_n-n\) है तो \(a_5\) क्या होगा?

If \(a_1=15\) and \(a_{n+1}=a_n-n\), what is \(a_5\)?

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

A. (7)

Step 1

Concept

The terms are (15,14,12,9,5), so \(a_5=5\). None of the listed options is correct.

Step 2

Why this answer is correct

The correct answer is A. (7). The terms are (15,14,12,9,5), so \(a_5=5\). None of the listed options is correct.

Step 3

Exam Tip

पद (15,14,12,9,5) नहीं बल्कि \(a_5=5\) होता है। दिए गए विकल्पों में सही मान नहीं है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=15\) और \(a_{n+1}=a_n-n\) है तो \(a_5\) क्या होगा? / If \(a_1=15\) and \(a_{n+1}=a_n-n\), what is \(a_5\)?

Correct Answer: A. (7). Explanation: पद (15,14,12,9,5) नहीं बल्कि \(a_5=5\) होता है। दिए गए विकल्पों में सही मान नहीं है। / The terms are (15,14,12,9,5), so \(a_5=5\). None of the listed options is correct.

Which concept should I revise for this Mathematics MCQ?

The terms are (15,14,12,9,5), so \(a_5=5\). None of the listed options is correct.

What exam hint can help solve this Mathematics question?

पद (15,14,12,9,5) नहीं बल्कि \(a_5=5\) होता है। दिए गए विकल्पों में सही मान नहीं है।