CAIE P1 2006 November — Question 6

Exam BoardCAIE
ModuleP1 (Pure Mathematics 1)
Year2006
SessionNovember
TopicGeometric Sequences and Series

6
  1. Find the sum of all the integers between 100 and 400 that are divisible by 7 .
  2. The first three terms in a geometric progression are \(144 , x\) and 64 respectively, where \(x\) is positive. Find
    1. the value of \(x\),
    2. the sum to infinity of the progression.