किसी अनुक्रम में \(b_1=7\) और \(b_n=3b_{n-1}-2n+1\) है। \(b_4\) का मान क्या होगा?

In a sequence, \(b_1=7\) and \(b_n=3b_{n-1}-2n+1\). What is the value of \(b_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. एक सौ चालीस(140)

Step 1

Concept

\(b_2=18\), \(b_3=49\), and \(b_4=140\). In exams, check the full subtracted amount after multiplication.

Step 2

Why this answer is correct

The correct answer is B. एक सौ चालीस / (140). \(b_2=18\), \(b_3=49\), and \(b_4=140\). In exams, check the full subtracted amount after multiplication.

Step 3

Exam Tip

\(b_2=18\), \(b_3=49\) और \(b_4=140\) है। परीक्षा में गुणा के बाद पूरी घटाई गई राशि जाँचें।

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किसी अनुक्रम में \(b_1=7\) और \(b_n=3b_{n-1}-2n+1\) है। \(b_4\) का मान क्या होगा? / In a sequence, \(b_1=7\) and \(b_n=3b_{n-1}-2n+1\). What is the value of \(b_4\)?

Correct Answer: B. एक सौ चालीस / (140). Explanation: \(b_2=18\), \(b_3=49\) और \(b_4=140\) है। परीक्षा में गुणा के बाद पूरी घटाई गई राशि जाँचें। / \(b_2=18\), \(b_3=49\), and \(b_4=140\). In exams, check the full subtracted amount after multiplication.

Which concept should I revise for this Mathematics MCQ?

\(b_2=18\), \(b_3=49\), and \(b_4=140\). In exams, check the full subtracted amount after multiplication.

What exam hint can help solve this Mathematics question?

\(b_2=18\), \(b_3=49\) और \(b_4=140\) है। परीक्षा में गुणा के बाद पूरी घटाई गई राशि जाँचें।