समानांतर श्रेढ़ी \(12,17,22,27,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the arithmetic progression \(12,17,22,27,\ldots\)?
Explanation opens after your attempt
A. \(a_n=5n+7\)
Concept
Here (a=12) and (d=5), so (a_n=12+(n-1)5=5n+7). Use (n-1) while forming the general term.
Why this answer is correct
The correct answer is A. \(a_n=5n+7\). Here (a=12) and (d=5), so (a_n=12+(n-1)5=5n+7). Use (n-1) while forming the general term.
Exam Tip
यहाँ (a=12) और (d=5), इसलिए (a_n=12+(n-1)5=5n+7)। सामान्य पद बनाते समय (n-1) का उपयोग करें।
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