79) greatest integer

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Source: — Data Sufficiency |

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by liferocks » Wed May 12, 2010 8:46 pm
For [2x]=0 range of values of x is 0=<x<=0.49

From 1..range of x is 0=<x<=0.99..insufficient
From 2..range of x is 0=<x<=0.33..sufficient

Ans option B
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by gmatmachoman » Fri May 14, 2010 6:01 am
liferocks wrote:For [2x]=0 range of values of x is 0=<x<=0.49

From 1..range of x is 0=<x<=0.99..insufficient
From 2..range of x is 0=<x<=0.33..sufficient

Ans option B
@LR, under what topic does this comes in?