समान्तर श्रेणी \(17,24,31,\ldots\) में \(a_n=136\) है। (n) का मान ज्ञात कीजिए।
In the AP \(17,24,31,\ldots\), \(a_n=136\). Find the value of (n).
Explanation opens after your attempt
B. (18)
Concept
From (136=17+(n-1)7), (119=7(n-1)) so (n=18). The term number should be an integer.
Why this answer is correct
The correct answer is B. (18). From (136=17+(n-1)7), (119=7(n-1)) so (n=18). The term number should be an integer.
Exam Tip
(136=17+(n-1)7) से (119=7(n-1)) इसलिए (n=18)। पद संख्या पूर्णांक आनी चाहिए।
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