GMAT Number Properties: Divisibility and Remainders

GMAT Number Properties: Divisibility and Remainders

Welcome back to our series on number properties. In this article, we deal with the fallout of failed divisibility: remainders. Remainders exist whenever an integer is divided by another integer that is not one of its factors. When integer n is divided by integer x,...
GMAT Rate Problems: Combined Work Problems

GMAT Rate Problems: Combined Work Problems

Welcome back to our series on rate problems. In the first article, we introduced the relationship between the variables of rate, work, and time – or speed, distance, and time. This article and the next will teach you how to approach combined work problems which...
Exponents on The GMAT/EA: Everything You Need To Know

Exponents on The GMAT/EA: Everything You Need To Know

Understanding Exponents A key piece of algebraic notation on GMAT and Executive Assessment (EA)  quant problems is the exponent. Exponents appear on many kinds of quantitative problems, so fluency with exponents (and radicals) is an indispensable skill for achieving a...
Pieces of Pi: Sectors, Arcs, and Central Angles

Pieces of Pi: Sectors, Arcs, and Central Angles

Welcome back to our series on GMAT circles. In the first article, we introduced the properties of radius/diameter, circumference, and area, discussing the relationships between all of these. This time we will introduce something called a central angle, which creates...
GMAT Rate Problems: Average Speed

GMAT Rate Problems: Average Speed

Welcome back to our series on GMAT quant rate problems. This article and the next will introduce concepts related to average speed. Though average speed is a simple concept, there are many ways for GMAT quant problems to “trick” test-takers with average speed...