I recall that there were some questions of this type asked on the main. Some of them were closed, some not.
I think it would be good to know what the MSE community thinks about this problem and, if there is a general agreement about this, it is better if it is stated somewhere explicitly.
If such questions are likely to be closed here and you are aware of other place where something like this would be on-topic, such information would be worth mentioning here, too.
I was prompted to ask this by this question, which is now deleted; hence it is visible only for some users. (But perhaps it is better to discuss this problem in general, rather than in a question mentioning specific book.)
There is an older questions, which is somewhat similar (but I would not say that it is a duplicate of my question): soft-question about textbooks, exercises, and solutions?