Problems in bold require full solutions! Problems denoted with a * are possible triad questions.

Chapter 18 in Silberberg:

# 18.33, *18.47, 18.60, [18.148], 18.163

Chapter 19 in Silberberg:

# *19.11, [19.54], 19.56, 19.108

sushi: 19.127

Read sections 19.1 and 19.2 in Silberberg