Or, you could write out the possibilities, using A, B, C, and D to represent each biography. To find out how many ways the student can select 3 from a group of 4, you can use the groups formula**: In the second, the student picks three biographies. In the first, the student picks all four biographies. There are three scenarios to consider here. So no matter what else you do, finish all the ETS material. I repeat: other companies' quant questions will NOT do an adequate job at preparing you for these skills. You'll get used to the attention to detail you'll need to make sure you don't misread questions or make careless mistakes.You'll get used to finding the logical shortcuts that are baked into many ETS questions.I still want you to work on those materials for three main reasons: Many of you will go through the ETS practice books and tests and not feel as though too many of the questions are difficult. Practice this so you make it a habit and so that you do it on the real test!Īn important note: although I do like books like the Manhattan Prep 5-lb GRE practice book for repetition with math concepts, it's much more important to eventually gain as much experience as possible solving ETS-written math questions, because ETS writes the GRE, and because other companies' questions don't imitate ETS's logical reasoning and shortcut components to math questions. This will provide a valuable opportunity to notice the big picture / logic of the question, which may make the question much easier. Pro Tip: After you read a new question, give yourself about 10 seconds to just think about it. If you can't get it, fine, but remember - as soon as you stop thinking and look up the answer, you're missing a chance to strengthen your math muscles and confidence. This will build your skill and confidence. What I'd recommend is this: do not look up the answer or explanation to a question until you've truly tried your best on it. They don't even need "challenge" questions. It's so important that students develop a "can do" attitude towards math. They get students used to adapting - a crucial skill for the GRE. If a student can solve them, his math confidence goes up.ģ. In doing so, the student builds math ability.Ģ. Mastery of those concepts is what's required - and lots of experience with official ETS GRE math questions.īefore I explain the question (please try it if you're so inclined), let me explain why hard questions matter. Welcome to the GRE - knowledge of concepts isn't sufficient. The reason I think this question is so hard is that, although it is testing concepts with which students may be familiar, those concepts are presented differently than they'd be in math classes or textbooks. did you know I have a GRE math practice app? (The solution is at the end of the article.) How many different ways are there for the student to select four books? A student must select four books however, two or more of her selections must be biographies. Let's check it out and then see why you should care about GRE math challenge questions:Ī certain bookcase contains ten books. It's the hardest GRE math question in the Official Guide, and I couldn't figure it out the first time I saw it, either. But seriously - I've never had a GRE tutoring student or class student who answered the following actual GRE question correctly. Ok - I admit it - I was just trying to get your attention with that line. You're gonna get this difficult GRE math question wrong. (My 3 main options to help you with your GRE prep are HERE. The Hardest GRE Math Question I've Ever Seen
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