Yeah, that'll go over well. Any kid willing to read this shit would already be interested in math/logic, and likely already know of many of the concepts in the book. Any kid not tickled pink by math/logic puzzles isn't going to read the book. You're not going to "spark an interest" this way.
I disagree. When I was 8-ish I had an interest in geeky things, but no simple, accessible math/logic problems to think about to begin growing my skills in that area. Math/logic puzzles written for a younger audience just weren't common. It wasn't until I was 12 or so that I found stuff I could actually read and understand enough to make progress on my own (beyond being good at arithmetic at a young age, which has nothing to do with math or logic really).
Maybe it's different today in our higher-tech world, with wikipedia and whatnot, but I had no way to get started. I see a lot of value in a the reinforcement - in having a kid who might be interested discover that they in fact are good at and enjoy such problems.