New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
If you guess, choose A,C or E. Don't repeat a letter (if guessing).I read a book about guessing for these tests and you know what you know, but the ones you don't know can make or break it, so the book gave the above suggestions (I'm oversimplifying it).
On the GRE, they rather you answer, because you get more points deducted for skipped questions than for guessing.~Marti