Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does not match the Textbook

This solution book does not match the textbook they sell in the online and it does not include the problems but only have textbook's page and problem's number that it is totally useless. Only if you have matching textbook then you can buy it otherwise do not buy it. I returned it right after I received it three weeks ago but I still did not get credit. Again, Do not buy it unless you are absolutely sure you have matching textbook.