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GMAT Positive and Negative Numbers

by ejkiv


July 17, 2015


This section is here just to make sure that you have all the bases covered.  As we mentioned before, the best way to do well on this exam is to have a firm grasp of the fundamentals.  Positive and negative numbers are not explicitly a section of the GMAT, but there will be problems where it is important to consider the effects of positive and negative numbers.  For this, we have put together the results of positive and negative numbers in different types of operations.  It will be important t...

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GMAT Even and Odd Numbers

by ejkiv


July 17, 2015


While it may seem like evens and odds are a pretty basic concept of math, the truth of the matter is the GMAT test writers have found some crafty ways to test this concept.  While some of the questions are rather simple, some of the most difficult questions on the exam can contain this concept. As for the basics, even integers are divisible by 2 and odd integers are not.  Some examples: Even: 0, 2, 4, 8, 20, 30, 112, 334, -2, -4, -8, -20, -30 , -112, -334 Odd: 1, 3, 5, 9, 21, 31, 113, 33...

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GMAT Consecutive Numbers

by ejkiv


July 17, 2015


GMAT consecutive numbers are those that are evenly spaced.  These are also known as arithmetic sequences, which will be discussed later, but there are so many ways in which thinking in terms of consecutive sequences can make problems easier.  A set of consecutive numbers might look like this {1, 2, 3, 4, 5} or (2, 4, 6, 8, 10} or {10, 20, 30, 40, 50} or even {14, 28, 42, 56, 70}.  There can be any amount of numbers within the set. You may see them written as consecutive odds, in which case t...

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GMAT Factors And Multiples

by ejkiv


July 17, 2015


Factors and multiples are ubiquitous on the GMAT, it seems that just about every question can either be solved or simplified by using these concepts.  While they are different concepts, I felt that they are so inter-related that they should be included together. First, you must be able to distinguish between the two.  As far as the GMAT is concerned, factors are less than or equal to a number while multiples are greater than or equal to a number (This is for the GMAT only - we will discuss i...

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GMAT Prime Numbers

by ejkiv


July 17, 2015


GMAT prime numbers are the building blocks for so many questions.  It is a basic concept, but make sure you are very comfortable with prime numbers.  A prime number is a positive number that is only divisible by 1 and itself.  1 is not a prime number and 2 is the only even prime number (this is important to remember for GMAT questions).  Here is a list of some of the lower value prime numbers: 2  3  5  7  11  13  17  19  23  29  31  37 You should be able to recognize these very quickly, and...

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