Is x a real number?
Sqrt X is not positive
x^2 is not positive
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Is x a real number?
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Anju@Gurome
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himu wrote:Is x a real number?
Sqrt X is not positive
x^2 is not positive
Statement 1: By definition, if x is a nonnegative real number then √x is always nonnegative. As √x is not positive, then we can only conclude that x is not a positive real number. But x can be either equal to zero or a negative real number or not real at all.
Not sufficient
Statement 2: As square of any real number is always nonnegative, x is either equal to zero or not real at all.
Not sufficient
1 & 2 Together: x is either equal to zero or not real at all.
Not sufficient
The correct answer is E.
Anju Agarwal
Quant Expert, Gurome
Backup Methods : General guide on plugging, estimation etc.
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Quant Expert, Gurome
Backup Methods : General guide on plugging, estimation etc.
Wavy Curve Method : Solving complex inequalities in a matter of seconds.
§ GMAT with Gurome § Admissions with Gurome § Career Advising with Gurome §
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Blue_Skies
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As per my information, they are not tested. In this question , the only thing required is not to forget '0'.ramv_fl wrote:Are real and imaginary numbers tested in GMAT?himu wrote:Is x a real number?
Sqrt X is not positive
x^2 is not positive
