Math, asked by somjsharma5757, 11 months ago

find the sum of first 8 term of GP 1 3 9 27 81

Answers

Answered by saharounak093

4

Answer:3280

Step-by-step explanation:r=3/1=3

a=1

Sn=a(r^n-1)/(r-1)

S8=1(3^8-1)/2

S8=(6561-1)/2

S8=6560/2

S8=3280

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