Question

In an arithmetic series Sn=1275, first term a=3, common difference d=4 find n solve this question ​

Answer 1

hope u will continue it

Answer 2

Answer:

n=319

Step-by-step explanation:

given

a=3

d=4

l=1275

formula

n=[l-a/d]+1

substitute

n=[1275-3/4]+1

n=318+1

n=319