BASICS FOR 10TH

If the 10th term of a GP is 9 and 4th term is 4, then what is its 7th term?

If the 4th, 10th and 16 th terms of a G.P. are x, y and z, respectively. Prove that x,y,z are G.P.

If the 4th, 10th and 16th terms of a GP are x, y, z respectively, prove that x, y, z are in GP.

When x=(5)/(2), numerically greatest term in the expansion of (3+2x)^(15) is (A)6th(B)8th (C) 10th(D)12th

In a row of boys ,Rajan is 10th from the right and Suraj is 10th from the left. When Rajan and Suraj interchange their positions ,Suraj will be 27th from the left. Which of the following will be Rajan's position from the right ?

3rd term of an A.P. Is 12 and 10th term is 26, then its 20th term is :