Posted by Malek on Saturday, January 15, 2011 at 6:45am.
Call the first term A1.
The An term is A1*r(n-1)
A4 = 8
A4 + A5 = 12 so A5 = 4 and r = 1/2 is the ratio.
Since A4 = 8, A1 = 64 is the first term
The series progression is
64, 32, 16, 8, 4, 2,...
If 10th term of a G.P. Is 9 and fourth term is 4, then its 7th term is:
If 10th term of a G.P. Is 9 and fourth term is 4, then its 7th term is:
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