समानांतर श्रेढ़ी \(31,35,39,43,\ldots\) का सामान्य पद कौन-सा है?
What is the general term of the arithmetic progression \(31,35,39,43,\ldots\)?
Explanation opens after your attempt
A. \(a_n=4n+27\)
Concept
The first term is (31) and (d=4), so (a_n=31+(n-1)4=4n+27). Put (n=1) to check an option.
Why this answer is correct
The correct answer is A. \(a_n=4n+27\). The first term is (31) and (d=4), so (a_n=31+(n-1)4=4n+27). Put (n=1) to check an option.
Exam Tip
पहला पद (31) और (d=4) है इसलिए (a_n=31+(n-1)4=4n+27)। विकल्प की जांच के लिए (n=1) रखें।
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