यदि \(a_1=40\) और \(a_{n+1}=a_n-3n\) है तो \(a_4\) क्या होगा?

If \(a_1=40\) and \(a_{n+1}=a_n-3n\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (22)

Step 1

Concept

The terms are (40,37,31,22), so \(a_4=22\). Exam tip: calculate (3n) separately before subtracting.

Step 2

Why this answer is correct

The correct answer is D. (22). The terms are (40,37,31,22), so \(a_4=22\). Exam tip: calculate (3n) separately before subtracting.

Step 3

Exam Tip

पद (40,37,31,22) हैं इसलिए \(a_4=22\) है। घटाव में (3n) का मान अलग-अलग निकालें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=40\) और \(a_{n+1}=a_n-3n\) है तो \(a_4\) क्या होगा? / If \(a_1=40\) and \(a_{n+1}=a_n-3n\), what is \(a_4\)?

Correct Answer: D. (22). Explanation: पद (40,37,31,22) हैं इसलिए \(a_4=22\) है। घटाव में (3n) का मान अलग-अलग निकालें। / The terms are (40,37,31,22), so \(a_4=22\). Exam tip: calculate (3n) separately before subtracting.

Which concept should I revise for this Mathematics MCQ?

The terms are (40,37,31,22), so \(a_4=22\). Exam tip: calculate (3n) separately before subtracting.

What exam hint can help solve this Mathematics question?

पद (40,37,31,22) हैं इसलिए \(a_4=22\) है। घटाव में (3n) का मान अलग-अलग निकालें।