For a geometric progression with first term and common ratio

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

Problem

For a geometric progression with first term

5

and common ratio

1.5

, determine the least positive integer

n

for which the sum of the first

n

terms is at least

300

. (a)

8

(b)

9

(c)

11

(d)

13