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Divisbility Rules

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Divisbility Rules

by vladmire » Sun Dec 07, 2008 7:12 am
Is positive integer n divisible by 3?

1. n^2/36 is an integer
2. 144/n^2 is an integer

a. stat 1
b stat 2
c both together
d each alone
e neither

oa= a

For statement 2 could n not be 6 which would be divisble by 3
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Source: — Data Sufficiency |
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by cramya » Sun Dec 07, 2008 8:59 am
I am sure u got the A) part already
For statement 2 could n not be 6 which would be divisble by 3
Yes its true which leads you to a yes answer

What if n=1 or 4 144/1^2 & 144/4^2 are both integers but neither 1 nor 4 is divisible by 3

NO

Since we get both a yes and a no we can stop here and say the statement is INSUFFICIENT

A)
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