The 10^th, 16^th and 22^nd terms of a G.P. are x, y and z respectively. Show that x, y and z are in G.P.

Find the 8^th term of a G.P., if its common ratio is 2 and 10^th term is 768.

In a G.P., the 4^th term is 48 and 7^th term is 384. Find its 6^th term.