This is an arithmetic progression based question from Chapter name- Arithmetic Progression
Chapter number- 9
Exercise – 9.6
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 n and a,
Where an = 4, d = 2 and Sn = –14
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Understanding CBSE Mathematics
Class :- 10th
Question no 56(ii)