The first two terms of a geometric progression add up to 12. The sum of third and fourth terms i... VIDEO
The first two terms of a geometric progression add up to 12. The sum of third and fourth terms is 48 . If the terms are alternately positive and negative, then
(a) Common ratio of G.P. is -2
(b) Common ratio of G.P. is -3
(c) Sixth term of G.P. is 128
(d) None of these
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