Math, asked by Ridhimehta, 8 months ago

find the sum of series 1-1/2+1/4-1/8....upto 8 terms
..please answer fast

Answers

Answered by nareshthakan40

5

Step-by-step explanation:

it is a GP

so

r= - 1/2

by using

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

a=1

1( 1/2^8 - 1 )/-1/2-1

=85/128

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