Question

how to find the nth term when the sum of first nth term is given. pls explain in detail​

Answer 1

✏A series whose terms are in Arithmetic progression is called Arithmetic series.

To find sum of arithmetic series, we use one of the formulas given below.

Sn = (n/2) [a + l]

Sn = (n/2) [2a + (n - 1)d]

a = first term,

n = number of terms of the series,

d = common difference and l = last term.

Answer 2

Answer:

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