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GMAT Math: How to Divide by a Square Root
A lot of students prepping for GMAT Quant, especially those GMAT students away from math for a long time, get lost when trying to divide by a square root. However, dividing by square roots is not...
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Algebraic Fractions on the GMAT
More formally, these are called “rational expressions” in mathematics — “rational” in the sense of “having do with a ratio”, as the word is used in the phrase “rational numbers“. These rational...
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GMAT Quant: Three Equations, Three Unknowns
First, here are two challenging Quant problems, both involving three equations with three algebraic unknowns. 2a + b + 3c = 6 a – b + 5c = 12 3a + 2b + 2c = 2 1) Given the equations above, what does...
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GMAT Math: Strange Symbols
The GMAT sometimes features quant questions with strange symbols. These symbols should not fluster you too much as long as you remember that they do not represent standard mathematical notation....
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GMAT Math: Algebra Equations with Radicals
This is a potentially tricky topic. First, consider these practice questions. 1. Which value(s) of x satisfies the equation above? I. –1 II. 4 III. 9 (A) I (B) III (C) I & II (D) I & III (E)...
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Three Algebra Formulas Essential for the GMAT
First, a few practice problems. 1) The numbers a, b, and c are all positive. If , then what is the value of ? Statement #1: a – b = 3 Statement #2: = 7 2) Given that (P + 2Q) is a positive number,...
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GMAT Math: Can you divide by a variable?
Question #1: In the equation, can you divide both sides by x? Question #2: In the equation (x – 3)(x + 5) = (2x + 1)(x + 5), can you divide both sides by (x + 5)? Question #3: Question #4: Dividing...
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Challenging GMAT Math Practice Questions
Here are fifteen challenging questions for GMAT math practice, with explanations below. Can you keep the GMAT Quant pace, doing these in under 90 seconds each? As always, no calculator! 1) Let...
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Matemática GMAT: Como Dividir por Uma Raíz Quadrada
Muitos estudantes, especialmente aqueles que não mexem com matemática há um bom tempo, ficam perdidos quando tentam fazer divisões com raízes quadradas. Primeiro, considere essas três questões...
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Matemáticas para el GMAT: cómo dividir por una raíz cuadrada
Muchos estudiantes, especialmente los que están lejos de las matemáticas durante mucho tiempo, se pierden al tratar de dividir por una raíz cuadrada. Primero, revisemos estas tres preguntas de...
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Algebraic Fractions on the GMAT
More formally, these are called “rational expressions” in mathematics — “rational” in the sense of “having do with a ratio”, as the word is used in the phrase “rational numbers“. These rational...
View ArticleClik here to view.
GMAT Quant: Three Equations, Three Unknowns
First, here are two challenging Quant problems, both involving three equations with three algebraic unknowns. 2a + b + 3c = 6 a – b + 5c = 12 3a + 2b + 2c = 2 1) Given the equations above, what does...
View ArticleClik here to view.
GMAT Math: Strange Symbols
The GMAT often features quant questions with strange symbols. These symbols should not fluster you too much as long as you remember that they do not represent standard mathematical notation. Instead,...
View ArticleClik here to view.
GMAT Math: Algebra Equations with Radicals
This is a potentially tricky topic. First, consider these practice questions. 1. Which value(s) of x satisfies the equation above? I. –1 II. 4 III. 9 I III I & II I & III I, II, & III 2....
View ArticleClik here to view.
Three Algebra Formulas Essential for the GMAT
First, a few practice problems. 1) The numbers a, b, and c are all positive. If , then what is the value of ? Statement #1: a – b = 3 Statement #2: = 7 2) Given that (P + 2Q) is a positive number,...
View ArticleClik here to view.
GMAT Math: How to Divide by a Square Root
A lot of students, especially those away from math for a long time, get lost when trying to divide by a square root. First, consider these three practice questions. 1. In the equation above, x = 2....
View ArticleClik here to view.
GMAT Math: Can you divide by a variable?
Question #1: In the equation, can you divide both sides by x? Question #2: In the equation (x – 3)(x + 5) = (2x + 1)(x + 5), can you divide both sides by (x + 5)? Question #3: Question #4: Dividing...
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GMAT Plugging In Strategy: Always Start with Answer Choice C
Learn this powerful math trick for GMAT Problem Solving questions. First, try these two practice GMAT Quantitative section Problem Solving questions. 1) Bert left the house with N dollars. He spent...
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Algebra on the GMAT: How to Factor
Master this fundamental algebraic skill which you will need on test day! First, try these practice problems. 1) (x – 4)(x + 6) (x + 4)(x – 6) (x – 4)(x – 6) (x – 2)(x + 12) (x + 2)(x – 12) 3) If ,...
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FOIL on the GMAT: Simplifying and Expanding
First, try this question: 1) If you find this problem relatively easy, probably most of this post will be for you as well. If this problem makes your head spin, you have found exactly the post you...
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