Solutions
Ch 11, Euler's Phi Function Ch 12, Prime Numbers
First Edition: 10.1, 11.1, 11.3, 11.4, 12.1, 12.2 Second Edition: 10.1, 11.1, 11.3, 11.5, 12.1, 12.2
First Edition: A11.2, A11.3, A12.1 Second Edition: 11.9, 11.10, 12.6