If three complex number are in A.P then they lie on

If three complex numbers are in AP.Then,they lie on a circle in the complex plane.

If z_(1) , z_(2), z_(3) are three complex numbers in A.P., then they lie on :

If z_(1) , z_(2), z_(3) are three complex numbers in A.P., then they lie on :

If z_(1), z_(2), z_(3) are three complex numbers in A.P., then they lie on

Three positive numbers form an increasing G.P .If the middle term in this G.P is doubled , the new numbers are in A.P .Then the common ration of the G.P is -

Three positive numbers from an increasing G.P. If the middle term in this G.P is double , the new numbers are in A.P then the common ratio of the G.P. is :