Which one of the following sequences is NOT a geometric progression?

MATHEMATICS · Single correct · CBSE · Mathematics · Sequences and Series · Sequences and Series

Problem

Which one of the following sequences is NOT a geometric progression? (a)

7,\,7,\,7,\,7

(b)

-3,\,6,\,-12,\,24

(c)

3,\,6,\,12,\,25

(d)

8,\,4,\,2,\,1