Abdimshsiwnsbs6063 Abdimshsiwnsbs6063

03-01-2018
Mathematics

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Determine if the series 7+28+112+448 has a sum

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anchitthawi anchitthawi

04-01-2018

s4=a1- a4 r / 1-r
=7- 448*4 / 1-4
=7- 1792 / -3
=-1785/-3
=595

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