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Archive | Probability

How Many Probability Questions are on the GRE?

There are few concepts on the GRE that frighten students more than that of probability. Many go out of their way to study difficult probability questions, agonizing over concepts that are beyond the scope of the GRE. Test day, though, you might only see one probability question. You will probably see two, though you might […]

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GRE Math Multi-subject Challenge Question

Once in a while it is fun to take a concept in an official GRE question and run with it. The question below is inspired by a question from the 2nd edition Official Guide. That is not to say it is that similar; I have only extracted a couple of concepts from that problem. I’ve […]

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Breakdown of the Most Commonly Tested GRE Quant Concepts

The 2nd edition Official Guide has just been released. At the back of the book is a new test (GRE Practice Test 2). In general, the concept break down is not surprising, if you look at the concepts that pop up in Practice Test 1 (which is the same as the practice test in the […]

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GRE Counting and Probability: Practice Question of the Week #39

Here’s this week’s practice question– good luck, we’ll be posting the answer tomorrow! How many integers between and  are such that the sum of their digits is ? 190 210 211 230 231 Update: Answer/explanation post!

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