Gre by ArgoPrep: : gre prep 2018 + 14 Days Online Comprehensive Prep Included + Videos + Practice Tests \



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GRE by ArgoPrep GRE Prep 2018 14 Days Online Comprehensive Prep Included Videos Practice Tests GRE Book 2018-2019 GRE Prep by ArgoPrep ( PDFDrive )

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Math Symbol
Common Name
Description
>
Greater than
Used to signify that the quantity to the left of the symbol is greater than
the quantity to the right. 

Less than or 
Used to signify that the quantity to the left of the symbol is less than or
equal to
equal to the quantity to the right. 




Greater than or 
Used to signify that the quantity to the left of the symbol is greater than
equal to
or equal to the quantity to the right. 

Square root
An irrational number that produces a specified quantity when multiplied
by itself. 
|x|
Absolute value
Reflects the positive distance of the expressed number from zero. 
!
Factorial
The product of the whole numbers from 1 to a given number.
||
Parallel Lines
Signifies that two lines are parallel to each other and do not intersect at
any point.

Perpendicular 
Signifies that two lines separated by this symbol intersect to form a right
Lines


angle. 
π
Pi
The geometric ratio of a circle’s circumference to its diameter; the value
used on the GRE is 3.14.
Real Numbers 
You will encounter only real numbers on the GRE, so you need not concern yourself with studying concepts related to
imaginary numbers. Real numbers are numbers found on the number line and are, with the exception of zero, either
positive or negative. Several classes of numbers are included in the real numbers category and will appear on the
exam. Let’s look at the various types of real numbers you can expect to see. 
Whole Numbers 
Whole numbers are positive counting numbers including zero that contain no decimal or fraction parts. 
0, 1, 2, 3, 4, 5... 
Integers 
Integers are all positive and negative whole numbers, including zero. Integers that occur in a sequence like the ones
below are called consecutive integers. 
-2, -1, 0, 1, 2, 3...

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