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Consider an `A.P. a_(1), a_(2), "……"a_(n), "……."` and the G.P. `b_(1),b_(2)"…..", b_(n),"….."` such that `a_(1) = b_(1)= 1, a_(9) = b_(9)` and `sum_(r=1)^(9) a_(r) = 369`, thenA. `b_(c) = 27`B. `b_(r) = 27`C. `b_(B) = 81`D. `b_(g) = 81`

Answer» Correct Answer - A


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