- Enter the values of first term, common difference and number of terms obtain the n-th term and Sum of n-terms

- Click on the calculate button.

$ a_n = a + (n-1) d$

$S_n = \frac {n}{2}[2a - (n-1)d]

1. Find the arithmetic progression (nth term and Sum of n terms) for the given details of numbers.

i. n= 10, a=2 , d= 4

ii. n= 20, a=-1 , d= 2

iii. n =11, a=0 ,d=1

iv. n=100, a=-2 , d=5

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