McGraw-Hill Education GRE 2019

Which of the following equals the average (arithmetic mean) of (a − 2)^2 and (a + 2)^2? A a^2 B a^2 + 2 C a^2 + 4 D a^2 + 2x E a ...

Here’s the question again: Which of the following equals the average (arithmetic mean) of (a − 2)^2 and (a + 2)^2? A a^2 B a^2 + ...

S T E P 1: Choose values for the variables in the question. What values should you choose for a and b? You can choose anything t ...

Strategy 2: Back-Solve Like plugging in numbers, back-solving is specific to Discrete Quantitative questions. Back-solving is an ...

Exercise: Two Essential Quantitative Reasoning Strategies Discrete Quantitative Questions The cost for a phone call is $0.75 fo ...

Traveling at a constant rate of 15 miles per hour, it took Bob x hours to go from his home to his school. Traveling at a consta ...

A retailer originally bought 50 equally priced phones for a total of z dollars. If he sold each phone for 25% more than he paid ...

Exercise Answers Discrete Quantitative Questions D Step 1: Choose a smart value for x: Let x = 3. Step 2: Substitute 3 for x in ...

value of x by back-solving. First, start with 3. If x = 3, then traveling at 15 mph, Bob traveled a distance of 15(3) = 45. Trav ...

Step 3: Substitute 6 for y in the choices, and identify which choice yields a value that matches your goal: 20. The only choice ...

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Quantitative Comparison Strategies Study this chapter to learn about: ■ Quantitative Comparison format ■ Strategy: Play devil’s ...

Though the choices on the test do not state it explicitly, your concern is whether there is a constant relationship between the ...

QUANTITY A QUANTITY B A B C D Choose: A if Quantity A is greater B if Quantity B is greater C if the two quantities are equal D ...

However, the test-makers will throw nuances at you that will force you to test other types of numbers. The following is a list o ...

SOLUTION: You want to not only get this question right, but to do so quickly. With your calculator, you can of course get a valu ...

(2^3 )^20 = 2^60 Now the values in both quantities are expressed with a base of 2. To determine which quantity is greater, you s ...

2 x < 100 QUANTITY A QUANTITY B A B C D SOLUTION: Instead of solving for x, you should see whether the value in Column B will ...

Exercise: Quantitative Comparison Questions Each of the following questions consists of two quantities, Quantity A and Quantity ...

a and b are positive integers a b = 3 1 QUANTITY A QUANTITY B 3a 9b A B C D QUANTITY A QUANTITY B A B C D Set A contains all ...