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|n| < 4

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|n| < 4

by ST » Wed May 27, 2009 11:52 am
If n is not equal to 0, is |n| < 4 ?

1. n^2 > 16

2. 1/|n| > n

Anwer is A
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Source: — Data Sufficiency |
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by abhinav85 » Wed May 27, 2009 1:35 pm
Are you sure OA is A?

Becoz from statement 1 there will be two cases
either N > 4 or N > -4? Not sufficient.

And from statement 2 is also Not sufficient.
becoz it only says 1/!n! > n.

But when you combine both 1 and 2 we get
that N > -4.

As 1/!n! > n satisfies this statement.

So IMO C.
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Yes

by ST » Wed May 27, 2009 3:49 pm
yes it is A.

Because rephrase of this question is -4 < n <4 ? and only condition 1 satisfy that so answer is A.
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by shah395 » Wed May 27, 2009 5:21 pm
Answer should be "A"

1. N^2 > 16
which means N is atleast little more than 4 ---- say 4.1
irrespective whatever N is (-)4.1 or (+)4.1
the absolute value of N is >4 for sure...
|-4.1|>4
|4.1|>4

Statement A is sufficient

2. 1/|N| > N
which means that
- if N is positive.. N has to be between 0 and 1 ...
if N is negative.. has to be >1

Statement B is not sufficient
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by abhinav85 » Wed May 27, 2009 7:53 pm
my mistake answer is A

i was considering n^2 = 16 not n^2 > 16.
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