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Is z > 0.5 ?

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Re: Is z > 0.5 ?

by swerve » Sat Sep 12, 2020 2:50 pm

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BTGmoderatorDC wrote: ↑
Fri Sep 11, 2020 3:42 pm
 Is z > 0.5 ?

(1) The tenths digit in the decimal representation of z is greater than 2.
(2) z is between 0 and 1.


OA E

Source: GMAT Prep
Option 1: \(z\) can be \(0.3\) as well as \(0.6\). Not sufficient \(\Large{\color{red}\chi}\)

Option 2: \(0<z<1\); same issue here \(z\) can be \(0.3\) or \(0.6\). Not sufficient \(\Large{\color{red}\chi}\)

Combining together 1 and 2,

\(z\) can be \(0.3\) or \(0.6\). \(\Large{\color{red}\chi}\)
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