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Lady O
Answers (2)
Final answer =72/25
We are told that a = 2r sum of all terms = a/(1-r) 2r/(1-r) = 8 2r = 8 - 8r 10r = 8 r = 4/5 then a = 8/5 sum of first two terms = a + ar = 8/5 + (8/5)(4/5) =8/5 + 32/25
