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If x is a positive integer

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candace_washington1980
 Post subject: If x is a positive integer
 Post Posted: Thu Aug 06, 2009 7:12 am 
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Gmat prep data sufficiency question

If x is a positive integer, is x < 16?

1. x is less than the average (arithmetic mean) of the first ten positive integers.
2. x is the square of an integer.

The is A. Why?
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adam.roffman
 Post subject: Re: If x is a positive integer
 Post Posted: Thu Aug 06, 2009 9:15 am 
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Students


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1. Average of first ten positive integers is 5.5, so restating 1: x is less than 5.5 = sufficient
2. X is the square of an integer = clearly insufficient
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candace_washington1980
 Post subject: Re: If x is a positive integer
 Post Posted: Thu Aug 06, 2009 12:32 pm 
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Thank you.
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adam.roffman
 Post subject: Re: If x is a positive integer
 Post Posted: Thu Aug 06, 2009 3:06 pm 
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Students


Posts: 6
Any time.
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Ben Ku
 Post subject: Re: If x is a positive integer
 Post Posted: Thu Aug 13, 2009 4:14 pm 
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ManhattanGMAT Staff


Posts: 823
If you have other questions about this problem, just ask!

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Ben Ku
Instructor
ManhattanGMAT
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