CAIE P1 2004 November — Question 2

Exam BoardCAIE
ModuleP1 (Pure Mathematics 1)
Year2004
SessionNovember
TopicGeometric Sequences and Series

2 Find
  1. the sum of the first ten terms of the geometric progression \(81,54,36 , \ldots\),
  2. the sum of all the terms in the arithmetic progression \(180,175,170 , \ldots , 25\).