Question

write the formula to find the sum of the first n term of an Ap, where first term is a and the last term is an​

Answer 1

Answer:

a+(n-1)d=an this is the nth term formula

Answer 2

Step-by-step explanation:

HELLO MATE

IN AN AP OF N TERMS

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

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