If a, b, c are in GP then relation between a, b, c can be ___________
(a) 2b = 2a + 3c
(b) 2a = b+c
(c) b =(ac)^1/2
(d) 2c = a + c
I got this question during an interview for a job.
This question is from Geometric Sequences topic in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics