CAIE P1 2002 November — Question 2

Exam BoardCAIE
ModuleP1 (Pure Mathematics 1)
Year2002
SessionNovember
TopicGeometric Sequences and Series

2 A geometric progression, for which the common ratio is positive, has a second term of 18 and a fourth term of 8 . Find
  1. the first term and the common ratio of the progression,
  2. the sum to infinity of the progression.