The numbers are claimed to form an arithmetic progression
MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series
Problem
The numbers 9.6,8.1,6.6,5.1 are claimed to form an arithmetic progression. If the claim is correct, what is their common difference?
(a) 1.5
(b) −1.3
(c) −1.5
(d) −1.2