TITLE: Hardy / Wright's intro to number theory is highly praised but has no exercises
QUESTION [18 upvotes]: "An introduction to the theory of numbers, G.H Hardy, E.M. Wright, revised by D.R. Heath-Brown, J.H. Silverman. Originally published 1938. Sixth edition 2008 with a foreword by Andrew Wiles" is AFAIK a highly praised book. - What seems odd to me is that there are no exercises in the book. This must be the first mathematics book I have ever seen that has no exercises in it. Exercises, with or without hints can't be missed IMO.
Question. Was this common for books written in that time, i.e. mathematics books without exercises? If not, it must have been noticed by the critics. What did they say about it? Or (shame ) have I perhaps missed an accompanying exercise book?

REPLY [2 votes]: Here is a link to a commutative algebra course by Prof. Kleiman at MIT:
http://web.mit.edu/18.705/www/syl11f.html
It has a link to his new text. It also includes a link to a pdf with problems and solutions.
Pertinent to this question, here is a quote from the syllabus page for the course:
"The solution set will also include solutions to the unassigned problems. Do try to solve each one before reading its solution, in order to better appreciate the issue. And do read the solution even if you think you already know it, just to make sure. Further, some problems have alternative solutions, which may enlighten you." 
Perhaps this is a happy pedagogical medium.