A geometric progression has first term and common ratio

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

A geometric progression has first term

-3

and common ratio

-2

. Which statement about its

9

th term is correct? (a) It is positive and equal to

768

. (b) It is positive. (c) It is negative. (d) It is positive and equal to

1536