In a GP `a_(6)`= …………..

a_(n) in GP = …………

In a GP, a_(8) = 192, r=2 then a_(12) = …………

In a GP a_(1) = 20 and a_(4) = 540 then r = …………..

In a G.P. a = 81, r = -1/3, a_(3) = ……….

In a GP a_(1)=3,a_(n)=96 and S_(n)=189. Find the number of terms

If , in a G.P. {a_(n)} it is given that a_(1)+a_(2)+a_(3)+a_(4) = 30 and a_(1)^(2)+a_(2)^(2)+a_(3)^(2)+a_(4)^(2) =340, then : (a_(1),r) -=

In an AP a_(1) = -4, a_(6)= 6 then a_(2) = …….

If a_(1), a_(2),………, a_(50) are in G.P, then (a_(1) - a_(3) + a_(5) - ....... + a_(49))/(a_(2) - a_(4) + a_(6) - ....... + a_(50)) =

Let ( a_(n) ) be a G.P. such that ( a_(4))/( a_(6)) =( 1)/( 4) and a_(2) + a_(5) = 216 . Then a_(1) =

(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) .