यदि \(a_1=3\) और \(a_{n+1}=2a_n+1\) है तो \(a_3\) क्या होगा?

If \(a_1=3\) and \(a_{n+1}=2a_n+1\), what is \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (15)

Step 1

Concept

The terms are (3,7,15), so \(a_3=15\). Exam tip: double first and then add (1).

Step 2

Why this answer is correct

The correct answer is C. (15). The terms are (3,7,15), so \(a_3=15\). Exam tip: double first and then add (1).

Step 3

Exam Tip

पद (3,7,15) हैं इसलिए \(a_3=15\) है। पहले दोगुना करें फिर (1) जोड़ें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=3\) और \(a_{n+1}=2a_n+1\) है तो \(a_3\) क्या होगा? / If \(a_1=3\) and \(a_{n+1}=2a_n+1\), what is \(a_3\)?

Correct Answer: C. (15). Explanation: पद (3,7,15) हैं इसलिए \(a_3=15\) है। पहले दोगुना करें फिर (1) जोड़ें। / The terms are (3,7,15), so \(a_3=15\). Exam tip: double first and then add (1).

Which concept should I revise for this Mathematics MCQ?

The terms are (3,7,15), so \(a_3=15\). Exam tip: double first and then add (1).

What exam hint can help solve this Mathematics question?

पद (3,7,15) हैं इसलिए \(a_3=15\) है। पहले दोगुना करें फिर (1) जोड़ें।