यदि \(a_n=a_{n-1}+4n-2\) और \(a_5=70\) है, तो \(a_2\) का मान क्या होगा?

If \(a_n=a_{n-1}+4n-2\) and \(a_5=70\), what is the value of \(a_2\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. अट्ठाईस(28)

Step 1

Concept

\(a_5=a_2+10+14+18\), so \(a_2=28\). In exams, subtract the later additions to find a middle term.

Step 2

Why this answer is correct

The correct answer is D. अट्ठाईस / (28). \(a_5=a_2+10+14+18\), so \(a_2=28\). In exams, subtract the later additions to find a middle term.

Step 3

Exam Tip

\(a_5=a_2+10+14+18\), इसलिए \(a_2=28\) है। परीक्षा में बीच के पद के लिए आगे की जोड़ घटाएँ।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=a_{n-1}+4n-2\) और \(a_5=70\) है, तो \(a_2\) का मान क्या होगा? / If \(a_n=a_{n-1}+4n-2\) and \(a_5=70\), what is the value of \(a_2\)?

Correct Answer: D. अट्ठाईस / (28). Explanation: \(a_5=a_2+10+14+18\), इसलिए \(a_2=28\) है। परीक्षा में बीच के पद के लिए आगे की जोड़ घटाएँ। / \(a_5=a_2+10+14+18\), so \(a_2=28\). In exams, subtract the later additions to find a middle term.

Which concept should I revise for this Mathematics MCQ?

\(a_5=a_2+10+14+18\), so \(a_2=28\). In exams, subtract the later additions to find a middle term.

What exam hint can help solve this Mathematics question?

\(a_5=a_2+10+14+18\), इसलिए \(a_2=28\) है। परीक्षा में बीच के पद के लिए आगे की जोड़ घटाएँ।