Hes got a point, but..
Hes got a point, but..
I agree there are mistakes but he offers a valuabe service. I understand the frustration in trying to figure out a problem 10 times only to find you had the correct answer all along, which was in the answer key(but not one of the choices in the book) I have an exam prep book that I began making note of mistakes and eventually gave up half way thru the book because I got sick of writing them all down. I am greatful for the mh products and find them invaluable but they are far from perfect.
You might look on the bright side that when you start finding mistakes, you are forced to learn.