# Blog (Free Videos!)

## GMAT Probability: Number of Distributions x Probability per Distribution

GMAT Probability and Number of Distributions x Probability per Distribution The Independent Probability Case for GMAT Probability Now, let’s go back to the example from the previous page, which we can rephrase as this:If a coin is flipped five times, what is the Probability that it will land on Heads only once?That gives us a … Read More

## “At Least” Problems in GMAT Probability

“At Least” Problems in GMAT Probability Hey, remember how all the Probabilities have to be fractions less than one? I mean, after all, it’s reasonably rare for there to be a greater than 100% chance that something will happen. The other thing to bear in mind is that a full Probability–anything that is forgone conclusion–is … Read More

## QUICK SOLUTION to List T Consists of 30 Positive Decimals GMAT

Here’s the Solution to this Crazy-ass Problem: List T Consists of 30 Positive Decimals… Now I’m not going to lie and tell you this question is easy. It’s actually a total beast. And for that reason, I suggest that you repeat this question and repeat it again and then repeat it again until it makes … Read More

## The Real World versus GMAT Critical Reasoning

There isn’t really much relationship between GMAT Critical Reasoning and the Real World GMAT Critical Reasoning questions are extremely tightly-constructed little logic bombs that have nothing to do with the Real World. While it’s not pleasant to have to say this, I think it’s … Read More

## Advanced GMAT Sentence Correction Secrets for GMAT Verbal

Advanced GMAT Sentence Correction Secrets IS IT WRITTEN ON THE PAGE? Much of the work of GMAT Sentence Correction or (GMAT Verbal in general) is simply learning to take the statements at absolute face value.  Think about how the most pedantic, literal person you know would interpret these sentences. Then turn yourself into the most … Read More

## How to Analyze GMAT Quant Questions Properly PART II

CONSISTENTLY ASK YOURSELF: “Am I spinning my wheels?” Remember, that means doing things that won’t get you to the answer any faster. Are you calculating something that won’t yield one of the five answer choices? That’s not to say that the GMAT is giving you wrong information, but rather that the answer choices restrict your … Read More

## Simple GMAT Fractions Trick for Dividing by 9s (Video!)

Here’s a simple GMAT Fractions trick that will help you out when you see a situation where you have to divide by 9 or 99 or 999, etc. It’s actually a really neat little trick and you’ll see it quite often in questions such as this one: Here is a quick tip for you, you … Read More

## How to Analyze GMAT Quant Questions PROPERLY

Arithmetic–or calculation for calculation’s sake–is a waste of time on GMAT Quant Questions. ​ There–I said it. Allow me to add a premise to my argument: insecurity plays a huge role in GMAT Quant Questions. Chew on that for a moment, and let this sink in: Already the human computer is widely displaced by mechanical … Read More

## The Ultimate Guide to GMAT Mixtures Questions — Mixture Problems GMAT — this year’s graduating students — and more!

The Ultimate Guide to GMAT Mixtures Questions Download this entire article in PDF form here! The beauty of Mixtures questions is that they are relatively simple once we get a couple of simple concepts straight. One nice thing about Mixture questions is that they are best learned through example, so let’s jump right in.  Let’s … Read More

## The Basic GMAT Probability Equations — A Short Guide

The Basic GMAT Probability Equations First, we need to establish some sort of general definition for the term Probability itself. You’ll most often hear Probability defined as some variant of: desired outcomes / total outcomes First things first: Probability is always a fraction, which, of course, could also be a percent (because these two statements, … Read More