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Evaluate the series $\sum_{n=1}^{5} 2^{-n} $
in Grade 12 Maths by Diamond (40.2k points) | 27 views

1 Answer

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T1= 1/2

T2= 1/4

T3= 1/8

common ratio= 1/4/(1/2) = 1/2

sum = a/(1-r) = 1/2/(1- 1/2) = 1
by Silver Status (31.3k points)

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