Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 2 - Reasoning and Proof - 2-1 Patterns and Inductive Reasoning - Got It? - Page 83: 2


The 21st term is B.

Work Step by Step

The 3rd and 6th positions contain B. Each position that is a multiple of 3 contains B. 21 is a multiple of 3, so the 21st position will contain B.
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