Question

how to solve arithemtic progression ​

Answer 1

You can solve AP by using the concept anf formula of AP

tn = a + (n+1) d , where a = t1

d = commen difference

Sn = n/2 (a + a +(n+1)d)

Answer 2

in an A.P.

nth term = a.n=

a+(n-1)d

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