Answer
Neither arithmetic nor geometric
Work Step by Step
$35-20\neq 20-10\neq 10-5$ then this is not arithmetic sequence
$\dfrac {35}{20}\neq \dfrac {20}{10}=\dfrac {10}{5}$ then this is not geometric sequence either
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 11 - Further Topics in Algebra - 11.3 Geometric Sequences and Series - 11.3 Exercises - Page 1033: 9
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