यदि \(a_1=18\) और \(a_{n+1}=a_n-3\) है तो \(a_4\) क्या होगा?

If \(a_1=18\) and \(a_{n+1}=a_n-3\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (9)

Step 1

Concept

The terms are (18,15,12,9), so \(a_4=9\). Exam tip: keep the sign correct in subtraction rules.

Step 2

Why this answer is correct

The correct answer is D. (9). The terms are (18,15,12,9), so \(a_4=9\). Exam tip: keep the sign correct in subtraction rules.

Step 3

Exam Tip

पद (18,15,12,9) हैं इसलिए \(a_4=9\) है। घटाने वाले नियम में चिह्न सही रखें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=18\) और \(a_{n+1}=a_n-3\) है तो \(a_4\) क्या होगा? / If \(a_1=18\) and \(a_{n+1}=a_n-3\), what is \(a_4\)?

Correct Answer: D. (9). Explanation: पद (18,15,12,9) हैं इसलिए \(a_4=9\) है। घटाने वाले नियम में चिह्न सही रखें। / The terms are (18,15,12,9), so \(a_4=9\). Exam tip: keep the sign correct in subtraction rules.

Which concept should I revise for this Mathematics MCQ?

The terms are (18,15,12,9), so \(a_4=9\). Exam tip: keep the sign correct in subtraction rules.

What exam hint can help solve this Mathematics question?

पद (18,15,12,9) हैं इसलिए \(a_4=9\) है। घटाने वाले नियम में चिह्न सही रखें।