Rules of Divisibility

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An integer is divisible by 2 if...

the integer is even.
An integer is divisible by 3 if...

the SUM of the integers DIGITS is divisible by 3
An integer is divisible by 4 if...

the integer is divisible by 2 twice, or if the LAST TWO digits are divisible by 4.
An integer is divisible by 5 if...

the integer ends in 5 or 0
An integer is divisible by 6 if...

the integer is divisble by BOTH 2 and 3
An integer is divisible by 8 if...

the integer is divisble by 2 THREE TIMES, or if the LAST THREE digits are divisible by 8
An integer is divisible by 9 if...

the SUM of the integers digits is divisble by 9
An integer is divisible by 10 if...

if the integer ends in 0

Author:	vlopez1782
ID:	12346
Card Set:	Rules of Divisibility
Updated:	2010-03-29 14:57:54
Tags:	GMAT
Folders:
Description:	Rules of divisibility by certain integers
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