यदि \(a_1=5\) और (a_{n+1}=a_n+(n+1)!) है तो \(a_4\) क्या होगा?

If \(a_1=5\) and (a_{n+1}=a_n+(n+1)!), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (39)

Step 1

Concept

The added values (2!,3!,4!) are (2,6,24), so \(a_4=37\). Exam tip: calculate factorial increments in order.

Step 2

Why this answer is correct

The correct answer is B. (39). The added values (2!,3!,4!) are (2,6,24), so \(a_4=37\). Exam tip: calculate factorial increments in order.

Step 3

Exam Tip

जुड़ने वाले मान (2!,3!,4!) यानी (2,6,24) हैं इसलिए \(a_4=37\) है। सही विकल्पों में (37) होना चाहिए।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=5\) और (a_{n+1}=a_n+(n+1)!) है तो \(a_4\) क्या होगा? / If \(a_1=5\) and (a_{n+1}=a_n+(n+1)!), what is \(a_4\)?

Correct Answer: B. (39). Explanation: जुड़ने वाले मान (2!,3!,4!) यानी (2,6,24) हैं इसलिए \(a_4=37\) है। सही विकल्पों में (37) होना चाहिए। / The added values (2!,3!,4!) are (2,6,24), so \(a_4=37\). Exam tip: calculate factorial increments in order.

Which concept should I revise for this Mathematics MCQ?

The added values (2!,3!,4!) are (2,6,24), so \(a_4=37\). Exam tip: calculate factorial increments in order.

What exam hint can help solve this Mathematics question?

जुड़ने वाले मान (2!,3!,4!) यानी (2,6,24) हैं इसलिए \(a_4=37\) है। सही विकल्पों में (37) होना चाहिए।