Calculation and Estimation Questions in The 2016 Official Guide for GMAT Review and Supplement

The Official Guide for GMAT Review, 2016   page 20, question 1 page 22, question 15 page 152, question 2 page 154, question 14 page 155, question 22 page 157, question 36 page 157, question 38 page 159, question 46 page 159, question 49 page 162, question 67 page 167, question 100 page 167, question […]

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Number Theory Questions in The 2016 Official Guide for GMAT Review and Supplement

The Official Guide for GMAT Review, 2016   page 22, question 18 page 23, question 23 page 25, question 26 page 26, question 42 page 165, question 93 page 166, question 96 page 167, question 106 page 168, question 108 page 171, question 132 page 172, question 140 page 174, question 151 page 177, question […]

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Geometry Cheat Sheet: Triangles

In each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.

Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.

If you’re taking any test involving geometry, here’s what you need to know about triangles:

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Geometry Cheat Sheet: Lines and Angles

In each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.

Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.

If you’re taking any test involving geometry, here’s what you need to know about lines and angles:

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Combinatorics Cheat Sheet

In each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.

Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.

If you’re taking any test involving combinatorics, here’s what you need to know:

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Exponents Cheat Sheet

Today I’m posting the first installment of a new occasional series for this blog. In each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.

Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.

If you’re taking any test involving exponents, here’s what you need to know:

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GMAT Question Analysis #1

For this week’s post I decided to do a GMAT math question. The Official Guide for the GMAT provides explanations for all included questions, so I’m going to write one of my own and discuss it. This question could just as easily show up on a test like the GRE, the SAT, or the ACT.

The number N is increased by x% and then the result is decreased by x%. If the result is 64% of N, which of the following could be the value of x?

A. 8
B. 36
C. 60
D. 64
E. None of these

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f(This)

Today’s post is for all the GMAT (and GRE and SAT and ACT) students out there. Working with a student this week reminded me just how confused many test-takers are about what it really means for something to be a function and how often it is that these test-takers wind up frozen and unable to even begin to tackle function questions.

Ultimately, a lot of people just don’t understand what functions actually are.

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