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

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

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (39)

Step 1

Concept

The terms are (3,7,17,35), so \(a_4=35\). Exam tip: add (4,10,18), the values of (n(n+3)).

Step 2

Why this answer is correct

The correct answer is D. (39). The terms are (3,7,17,35), so \(a_4=35\). Exam tip: add (4,10,18), the values of (n(n+3)).

Step 3

Exam Tip

पद (3,7,17,35) नहीं बल्कि \(a_4=35\) है। (n(n+3)) के मान (4,10,18) जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

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

Correct Answer: D. (39). Explanation: पद (3,7,17,35) नहीं बल्कि \(a_4=35\) है। (n(n+3)) के मान (4,10,18) जोड़ें। / The terms are (3,7,17,35), so \(a_4=35\). Exam tip: add (4,10,18), the values of (n(n+3)).

Which concept should I revise for this Mathematics MCQ?

The terms are (3,7,17,35), so \(a_4=35\). Exam tip: add (4,10,18), the values of (n(n+3)).

What exam hint can help solve this Mathematics question?

पद (3,7,17,35) नहीं बल्कि \(a_4=35\) है। (n(n+3)) के मान (4,10,18) जोड़ें।