Here’s the answer to yesterday’s practice question– thanks for sending in all of your answers and explanations!
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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!
GRE Probability: Practice Question of the Week #33 Answer
Here are the answer and explanations to yesterday’s practice question, thanks for sending in all of your answers! Explanation Video Explanation
Strategies for Difficult GRE Questions
Below is a challenging GRE question. However, instead of just having you take a blind hack at it, I want to provide a little bit of context. First off, if you sense that a question is very difficult on the test – be it a verbal or quantitative one – then skip it. Because the [...]
Rules and Counting Techniques for Probability on the GRE
In my last two posts, we looked at ways to make up time with probability questions on the GRE by quickly eliminating answer choices, and then guessing the correct answer. In those posts, we examined the following question: From a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected [...]
GRE Probability Questions: Using the Elimination Strategy
In my last post, we examined the following question. From a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected to attend a conference in Las Vegas. What is the probability that Marnie and Noomi are both selected? (A) 0.1 (B) 0.2 (C) 0.25 (D) 0.4 (E) 0.6 In [...]
GRE Probability Questions
If you’re like most students, you probably struggle with the GRE’s time constraints, and you probably have difficulties with probability questions. Great! In this article, we’ll examine how probability questions can provide you with a convenient opportunity to make up lost time. To set this up, please consider the following scenario: It’s test day, and [...]
Prime Numbers and Probability – GRE Math Problem
Oftentimes, math problems will require that you know more than one concept. Sometimes, you’ll have to know the difference between an integer and a number in order to get the question right. Below, I’ve combined prime numbers with probability, two subjects already covered in this blog. The question below isn’t easy and actually takes a [...]
GRE Math — The Probability of a Coin Toss
If rate problems bring to mind moving trains, then there is no more iconic type of probability question than the coin toss. And there is good reason for this—coin tosses represent a fair portion of probability questions on the GRE. Even if a question doesn’t invoke the coin toss, the way we approach a coin toss problem [...]
Probability Workshop — Part I
At the mere mention of probability on the GRE students’ eyes glaze over and all conversation stops, save perhaps for the hushed admission that they don’t like probability. While probability can be very difficult—and many of the publishers give it short shrift (so there are a lack of practice problems)—keeping a few concepts in mind [...]
