समान्तर श्रेणी \(8,14,20,\ldots\) में \(a_n=74\) है। (n) का मान ज्ञात कीजिए।
In the AP \(8,14,20,\ldots\), \(a_n=74\). Find the value of (n).
Explanation opens after your attempt
B. (12)
Concept
From (74=8+(n-1)6), (66=6(n-1)), so (n=12). The term number must always be an integer.
Why this answer is correct
The correct answer is B. (12). From (74=8+(n-1)6), (66=6(n-1)), so (n=12). The term number must always be an integer.
Exam Tip
(74=8+(n-1)6) से (66=6(n-1)), इसलिए (n=12)। उत्तर में पद संख्या हमेशा पूर्णांक होनी चाहिए।
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