remark: DON'T buy the Global Edition of the book, it contains different exercises than the original book and is riddled with errors, it's basically unreadable/unusable.
Second this, don't buy global edition. The authors explicitly mentioned that they are NOT going to release an errata for it. Probably because it would be a book of itself...
I always find the whole thing ridiculous. They literally just needed to copy-paste the original book.
In their effort to discourage people from buying the international edition, they scrambled the exercises and their numbers. And introduced errors that way.
Yeah I absolutely have no idea why they did it. Looks like they hired someone to re-write the exercises (just using different numbers as you mentioned or switched orders) and in that way many answers are wrong :/
remark: DON'T buy the Global Edition of the book, it contains different exercises than the original book and is riddled with errors, it's basically unreadable/unusable.