यदि \(a_n=7n-23\) है, तो पहला धनात्मक पद कौन-सा है?

If \(a_n=7n-23\), which is the first positive term?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (4)वाँ(4)th

Step 1

Concept

\(a_3=-2\) and \(a_4=5\), so the first positive term is the (4)th. Check \(a_n>0\) for positive terms.

Step 2

Why this answer is correct

The correct answer is B. (4)वाँ / (4)th. \(a_3=-2\) and \(a_4=5\), so the first positive term is the (4)th. Check \(a_n>0\) for positive terms.

Step 3

Exam Tip

\(a_3=-2\) और \(a_4=5\), इसलिए पहला धनात्मक पद (4)वाँ है। धनात्मक पद के लिए \(a_n>0\) जांचें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=7n-23\) है, तो पहला धनात्मक पद कौन-सा है? / If \(a_n=7n-23\), which is the first positive term?

Correct Answer: B. (4)वाँ / (4)th. Explanation: \(a_3=-2\) और \(a_4=5\), इसलिए पहला धनात्मक पद (4)वाँ है। धनात्मक पद के लिए \(a_n>0\) जांचें। / \(a_3=-2\) and \(a_4=5\), so the first positive term is the (4)th. Check \(a_n>0\) for positive terms.

Which concept should I revise for this Mathematics MCQ?

\(a_3=-2\) and \(a_4=5\), so the first positive term is the (4)th. Check \(a_n>0\) for positive terms.

What exam hint can help solve this Mathematics question?

\(a_3=-2\) और \(a_4=5\), इसलिए पहला धनात्मक पद (4)वाँ है। धनात्मक पद के लिए \(a_n>0\) जांचें।