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Senior Manager
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GMATPrep - DS [#permalink] New post 10 Aug 2006, 14:02
00:00
A
B
C
D
E

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(N/A)

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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Can someone explain this one....
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 [#permalink] New post 10 Aug 2006, 14:23
The answer is E.

St. one X could be 6 or 2 so insuff

St, two : x = 1 and no information wut so ever about y thus insuff.

Taking one and two together

1/y and 1/3 has LCM of 6 ( still y can be 2 or 6) thus insuff
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 [#permalink] New post 10 Aug 2006, 22:49
E

St1: y could be 2 or 6: INSUFF
St2: y could be anything: INSUFF
Combined: y could be 2 or 6: INSUFF
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 [#permalink] New post 10 Aug 2006, 23:24
Clear E.

1) y can be 2 or 6
2) y can be anything.
Together. Again same as A
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Re: GMATPrep - DS [#permalink] New post 11 Aug 2006, 22:16
gmatornot wrote:
Can someone explain this one....


good one.

Never heard of Least common Denominator? Is it same as LCM.

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 [#permalink] New post 12 Aug 2006, 06:38
can someone explain how to calculate LCM,GCM for fractions ?
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 [#permalink] New post 12 Aug 2006, 12:32
LCM is least common multiple. LCM of 4 and 6 is 12.
Similarly, if LCM of x/y and 1/3 is 6 then x/y is 6/1/3 or x/y=(18)k
y can be 2 or 6 in statement a and b.
  [#permalink] 12 Aug 2006, 12:32
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