DS-Gmat Review- question 100

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Taniuca: Senior | Next Rank: 100 Posts; Posts: 62; Joined: Mon Aug 02, 2010 3:25 pm; Thanked: 3 times

by Taniuca » Tue Aug 16, 2011 3:54 pm

Could someone be kind to explain the sufficiency for the next problem:

if [x] denotes the greates interger less tha or equal to x, is [x]=0?

1) 5x+1=3+2x
2)0<x<1

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Source: Beat The GMAT — Data Sufficiency | Tue Aug 16, 2011 3:54 pm

GmatKiss: Legendary Member; Posts: 2789; Joined: Tue Jul 26, 2011 12:19 amFollowed by: 43 members; Location: Chennai, India; Thanked: 206 times; GMAT Score:640

by GmatKiss » Wed Aug 17, 2011 12:40 am

Taniuca wrote:Could someone be kind to explain the sufficiency for the next problem:

if [x] denotes the greates interger less tha or equal to x, is [x]=0?

1) 5x+1=3+2x
2)0<x<1

Please clarify on the bolded part! Its confusing.

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sunny.bhasin: Junior | Next Rank: 30 Posts; Posts: 21; Joined: Fri Jun 18, 2010 5:57 am

by sunny.bhasin » Wed Aug 17, 2011 7:30 pm

HI,

it means any integer number which is either less than or equal to x,let me explain it by example:
[3.2]=3
[3]=3

similarly a)x=2/3 so[2/3]=0
b)0<x<1 so[x]=0

either statement alone is sufficient so answer id option d

GmatKiss wrote:
Taniuca wrote:Could someone be kind to explain the sufficiency for the next problem:

if [x] denotes the greates interger less tha or equal to x, is [x]=0?

1) 5x+1=3+2x
2)0<x<1
Please clarify on the bolded part! Its confusing.

Like this post

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