In a G.P. 729, 243, 81, … find `t_(7)`

(i) Given a G.P. with a=729 and 7th term 64 find S_(7) . (ii) If {a_(n)} is a G.P. and a_(1)=4,r=5 , find a_(6) and S_(6) .

For a G.P. if t_3 =20, t_6 =160, find S_7

For G.P. : If a=7/243 , r=3 find t_6 ............

If the product of 4 terms of a G.P. is 729 , then find the GM of the G.P.

For the G.P. If r = (1)/(3), a = 9 find t _(7)

In a GP, t_4=27 and t_7=729 . Find t_(11) where t_n denotes the nth term.

If for a G.P., t_3 = 1/3 , t_6 = 1/81 , find r.