MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series
Problem
Consider the sequence 4,−2,1,−21,…. Which of the following statements about this sequence is correct?
(a) It is an AP with common difference −6.
(b) It is a GP with common ratio −0.5.
(c) It is a GP with common ratio 0.5.
(d) It is a GP with common ratio −2.