Data Sufficiency

GMAT Quant: How to Solve Two Equations with Two Variables

By - Jun 12, 09:00 AM   Comments [0]

Fact: If you have two variables and only one equation, in general you will not be able to solve for the individual values of the variables.  You need two separate equations in order to solve for the individual values of each of two variables. (This...

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GMAT Question of the Day (June 12): Coordinate Geometry and Sentence Correction

By - Jun 12, 02:00 AM   Comments [0]

Math (DS) At what angle do the lines and intersect? 1. 2. Question Discussion & Explanation Correct Answer - A - (click and drag your mouse to see the answer) GMAT Daily Deals Knewton Gmat: fully custom prep w/ the highest point increase guarantee in the industry. $350...

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The GMAT’s Favorite Triangles

By - Jun 8, 09:00 AM   Comments [0]

Understand the properties of the GMAT Quantitative section’s two favorite triangles!  The two special triangles are right triangles with special angles and side.  Like all right triangles, they satisfy the Pythagorean Theorem.  These two triangles are “special” because, with just a couple pieces of information, we can figure out...

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GMAT Question of the Day (June 8): Absolute Values (Modulus) and Sentence Correction

By - Jun 8, 02:00 AM   Comments [1]

Math (DS) Is Question Discussion & Explanation Correct Answer - E - (click and drag your mouse to see the answer) GMAT Daily Deals Kaplan GMAT Prep provides nearly 6000 test questions and exercises to practice with! Save $400 via GMAT Club! Vocaz specializes in positioning engineers strategically within the...

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GMAT Question of the Day (June 7): Geometry and Critical Reasoning

By - Jun 7, 02:00 AM   Comments [0]

Math (DS) Water evaporates at the rate of two liters per hour per one square meter of surface. How long will it take to evaporate 30 liters of water from a swimming pool full of water with vertical walls and a flat bottom that holds 56...

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GMAT Math: Special Properties of the Line y = x

By - Jun 4, 09:00 AM   Comments [0]

The 45º angle Fact: All lines with slopes of 1 make 45º angles with both the x- and y-axes. Conversely, if a line makes a 45º angles with either the x- of y-axes, you know immediately its slope must be . This first fact is true, not only...

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GMAT Quant: Difference of Two Squares

By - May 31, 09:00 AM   Comments [0]

You may remember this formula, one of the sleekest factoring tricks in all of algebra: This formula, called “the difference of two squares” formula, is a favorite of standardized test writers.  A simple enough pattern: see if you can detect where it shows up in the...

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GMAT Question of the Day (May 31): Algebra and Critical Reasoning

By - May 31, 02:00 AM   Comments [1]

Math (DS) If is a positive integer, is \sqrt{x} < 2.5x - 5[/latex] ? 1. [latex]x < 3[/latex] 2. [latex]x[/latex] is a prime number Question Discussion & Explanation Correct Answer - A - (click and drag your mouse to see the answer) GMAT Daily Deals Knewton Gmat: Highly qualified instructors. >...

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Common GMAT Topic: Descriptive Statistics

By - May 30, 16:23 PM   Comments [0]

Here’s a whirlwind tour of one of the most frequently tested sets of concepts on the GMAT Quantitative section. You don’t have to be an expert on statistics: a little goes a long way.   The Mean The mean is just the ordinary average: add up all the items...

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GMAT Question of the Day (May 29): Arithmetic and Sentence Correction

By - May 29, 02:00 AM   Comments [0]

Math (DS) What is the value of ? 1. is odd 2. is even Question Discussion & Explanation Correct Answer - C - (click and drag your mouse to see the answer) GMAT Daily Deals Veritas Prep: admissions consultants from all of the top 25 business schools. GMAT...

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