OCR MEI C2 — Question 4

Exam BoardOCR MEI
ModuleC2 (Core Mathematics 2)
TopicGeometric Sequences and Series
4 Sequences A, B and C are shown below. They each continue in the pattern established by the given terms.
A:1,2,4,32,\(\ldots\)
B:20,- 10,5,- 2.5,1.25,- 0.625,\(\ldots\)
C:20,5,1,20,5,\(\ldots\)
  1. Which of these sequences is periodic?
  2. Which of these sequences is convergent?
  3. Find, in terms of \(n\), the \(n\)th term of sequence A .
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