समानांतर श्रेढ़ी \(19,23,27,31,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the arithmetic progression \(19,23,27,31,\ldots\)?
Explanation opens after your attempt
B. \(a_n=4n+15\)
Concept
The first term is (19) and (d=4), so (a_n=19+(n-1)4=4n+15). Remember (n-1) while forming the general term.
Why this answer is correct
The correct answer is B. \(a_n=4n+15\). The first term is (19) and (d=4), so (a_n=19+(n-1)4=4n+15). Remember (n-1) while forming the general term.
Exam Tip
पहला पद (19) और (d=4) है इसलिए (a_n=19+(n-1)4=4n+15)। सामान्य पद बनाते समय (n-1) का ध्यान रखें।
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