GMAT Official Guide Quantitative Review 2019_ Book

3.0 Math Review, ...

3.0 th飞rVL'\/v 3.0 Math Review To answer quantitative reasoning questions on the GMAT exam, you will need to be familiar with ba ...

GMAT® Official Guide 2019 Quantitative Review Section 3.4, "Word Problems," presents examples of and solutions to the following ...

3.1 Arithmetic Fractions In a fraction !!:... , n is the numerator and dis the denominator. The denominator of a fraction can ...

GMAT® Official Guide 2019 Quantitative Review Decimals In the decimal system, the position of the period or decimal point deter ...

3.1• , , Arithmetic Multiplication of decimals. To multiply decimals, multiply the numbers as if they were whole numbers and the ...

GMAT® Official Guide 2019 Quantitative Review On a number line, numbers corresponding to points to the left of zero are negative ...

3.1 ~」1 Arithmetic A proportion is a statement that two ratios are equal; for example, - =^2 —8. 1s a proportion. One wa 3 12 y ...

GMAT® Official Guide 2019 Quantitative Review In the following example, the increase is greater than 100 percent: If the cost of ...

3.1 让th Rev· Arithmetic The mode of a list of numbers is the number that occurs most frequently in the list. For example, the mo ...

GMAT® Official Guide 2019 Quantitative Review / \ Data Value Frequency X f -5 2 4 2 -3 1 -2 3 1 5 0 7 Total 20 From the freq ...

3.1 Arithmetic The relationship between sets is often illustrated with a Venn diagram in which sets are represented by regions i ...

GMAT® Official Guide 2019 Quantitative Review Thus, by the multiplication principle, the number of ways of ordering the n object ...

3.1 • Arithmetic equally likely. For experiments in which all the individual outcomes are equally likely, the probability of an ...

GMAT® Official Guide 2019 Quantitative Review The following multiplication rule holds for any independent events E and F : P(E a ...

3.2 ,1 Algebra Simplifying Algebraic Expressions Often when wor如ngwith algebraic expressions, it is necessary to simplify them ...

GMAT® Official Guide 2019 Quantitative Review Two equations having the same solution(s) are equivalent equations. For example, t ...

3.2 Algebra Note that 3x + 4y = 17 implies 6x + 8y = 34, which contradicts the second equation. Thus, no values of x and y can s ...

GMAT® Official Guide 2019 Quantitative Review Solving Equations by Factoring Some equations can be solved by factoring. To do t ...

3.2 Algebra (^2 )^3 x^2 — 3=8x 3 x^2 -8x-3 = 0 ( 3 x+l)(x- (^3) )=0 3x l = 0 or x -3 = 0 x=—-^1 or x = 3 A quadratic equation h ...