यदि \(a_4=19\) और (d=7) है तो \(a_{18}\) क्या होगा?
If \(a_4=19\) and (d=7), what is \(a_{18}\)?
Explanation opens after your attempt
B. (117)
Concept
(a_{18}=a_4+(18-4)d=19+14\times7=117). Add the gap directly from the known term.
Why this answer is correct
The correct answer is B. (117). (a_{18}=a_4+(18-4)d=19+14\times7=117). Add the gap directly from the known term.
Exam Tip
(a_{18}=a_4+(18-4)d=19+14\times7=117)। ज्ञात पद से सीधे अंतर जोड़ें।
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