Which term of the G.P.: `1/3,1/9,1/(27) i s1/(19683)?`

Which term of the G.P. 2,1, 1/2,1/4, i s1/(128)?

Which term of the G.P. 2,1,1/2,1/4,..... i s1/(128)?

Which term of the G.P.: sqrt(2),1/(sqrt(2)),1/(2sqrt(2)),1/(4sqrt(2)), i s1/(512sqrt(2))?

Which term of the A.P. 10, 9(1)/(3), 8(2)/(3),....-(2)/(3), ..... is the first negative term ?

Which term of the G.P.: \ sqrt(3),3,3sqrt(3), i s\ 729 ?

Which term of the following sequences:(a) 2,2sqrt(2),4, . . . is 128? (b) sqrt(3),3,3sqrt(3), . . . is 729?(c) 1/3,1/9,1/(27), . . . is 1/(19683)?

Find the 9th term of the G. P. 2, 1, (1)/(2) ,….

Find the 4th term from the end of the G.P. 1/2,1/6,1/(18),1/(54), ,1/(4374)

Find: the 10th term of the G.P. -3/4,1/2,-1/3,2/9, ....