यदि \(a_1=22\) और \(a_{n+1}=a_n-n\) है तो \(a_4\) क्या होगा?

If \(a_1=22\) and \(a_{n+1}=a_n-n\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (16)

Step 1

Concept

The terms are (22,21,19,16), so \(a_4=16\). Exam tip: subtract (n) in the order (1,2,3).

Step 2

Why this answer is correct

The correct answer is B. (16). The terms are (22,21,19,16), so \(a_4=16\). Exam tip: subtract (n) in the order (1,2,3).

Step 3

Exam Tip

पद (22,21,19,16) हैं इसलिए \(a_4=16\) है। (n) को (1,2,3) के क्रम में घटाएँ।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=22\) और \(a_{n+1}=a_n-n\) है तो \(a_4\) क्या होगा? / If \(a_1=22\) and \(a_{n+1}=a_n-n\), what is \(a_4\)?

Correct Answer: B. (16). Explanation: पद (22,21,19,16) हैं इसलिए \(a_4=16\) है। (n) को (1,2,3) के क्रम में घटाएँ। / The terms are (22,21,19,16), so \(a_4=16\). Exam tip: subtract (n) in the order (1,2,3).

Which concept should I revise for this Mathematics MCQ?

The terms are (22,21,19,16), so \(a_4=16\). Exam tip: subtract (n) in the order (1,2,3).

What exam hint can help solve this Mathematics question?

पद (22,21,19,16) हैं इसलिए \(a_4=16\) है। (n) को (1,2,3) के क्रम में घटाएँ।