Hi

Geometric Series: {3,1.5, 0.75 ...} r = .5  

 = a(1-r^6)/(1-r)

 = 3(1-.5^6)/.5 = 3*.984375/.5 = 5.90625



Note:

|r|<1  = a/(1-.5)=3/.5 = 6

 

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