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mod [#permalink] New post 02 Jun 2009, 03:43
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Is mod (x) < 1 ?

(1) ⏐mod (x + 1)⏐ = 2 mod (x - 1)⏐
(2) ⏐mod (x - 3)⏐ ≠ 0

St 1:
(x+1) = 2(x-1)
X = 3
(x+1) = -2(x-1)
X = 1/3
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Joined: 16 Jan 2009
Posts: 351
Location: United States
Schools: Anderson '15, Insead '13
GMAT 1: 710 Q50 V35
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WE: Sales (Telecommunications)
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Re: mod [#permalink] New post 03 Jun 2009, 12:05
from (1)

x=-+3
OR
x=-+1/3

so (1) not sufficient

from (2)

x!=-+3
so (2) not sufficient

using (1) and (2) togother,

x=-+1/3
in any case mod (x) < 1

IMO C
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Re: mod   [#permalink] 03 Jun 2009, 12:05
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