Author Archive - grockit
“Who” vs. “Whom” in GMAT Sentence Correction
There are some issues on which the GMAT sentence correction questions test for the specific preferred style of the GMAT as much as for the accepted rules of grammar. “Who” vs. “whom,” luckily, is not one of them. This is generally a straightforward issue, and...
Geometry Series Part 3: Couple Common Circle Concepts
One of the key things to remember with circles is that once you know one piece of information, you know everything about the circle itself. Additional angles and lengths inside are not always so simple, but it is possible to convert circumferences to areas, to...
Geometry Series Part 2: Inscribed Triangles
To start off, let’s quickly review the essentials. These are formulas/concepts you must know: a² + b² = c², but only when a right triangle. If you don’t know it’s a right triangle, Pythagorean theorem does not apply! Common special right triangles include 3-4-5, 5-12-13, 8-15-17, 7-24-25...
Geometry Series Part 1: Circles Inscribed in Squares
In this series, we will cover many types of geometric scenarios encountered on the GMAT. A basic knowledge of simple formulas (area, perimeter, etc.) is essential, but there are numerous shortcuts to geometry questions that will save you time. Today, we’ll explore circles inscribed in...
Passive and Active Voices on the GMAT, and When They Matter
What’s the difference between these two sentences? He spoke clearly, articulating the points of his plan. The points of his plan were articulated in his clear speech. The first sentence is written in the active voice, and the second is written in the passive voice. In the...
Sets: Matrix or Venn?
Sets, Matrices and Venn Diagrams: They are all the Same It’s really a matter of preference; some students like to use Venn diagrams, and others make matrices. Personally, I prefer a matrix format, but there is no “better” way. On your GMAT, you will encounter 1-3...
How To Get The Most Out Of Your GMAT Lessons
People prepare for the GMAT in many different ways. Some use books to do practice questions on their own. And of course, some take a class or have a private tutor. I’m here to offer a few tips to the people in that last group,...
Possessive Pronouns: His, Hers, Mine, and all Their Cohorts
Grammar is, of course, an issue of concern on the Sentence Correction questions seen on the GMAT. But good grammar is also generally helpful and is of special importance on the writing sample, which is your chance to show the admissions committee that you are...
Systems of Equations in Data Sufficiency
If the GMAT Quantitative section were 3 hours, all of our lives would be easier. We could take our time, work through each solution, check our choice, and sharpen our pencil before each question. Since we are not afforded this luxury, we must take back...
