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Program to input a, r, n and to evaluate sum of the G.P series:

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# Program to input a, r, n and to evaluate sum of the G.P series:
print("a= First term, r= Common ratio, n= No. of terms")
a,r,n=input("Enter the value of a, r, n:").split(",")
n=int(n)
a=float(a)
r=float(r)
s=0.0
for m in range (0,n):
 s=s+a*(r**m)
print("The sum of the G.P. series is= ",s)
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