This is an arithmetic progression based question from Chapter name- Arithmetic progressions
In this question we have been given that there be an A.P.
first term a and common difference d.
Also, If an denotes its nth term and Sn is the sum of first n terms,
Now we have to find k, if Sn = 3n2 + 5n and ak = 164
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Understanding CBSE Mathematics
Class :- 10th
Question no 56(vii)