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# GMATPrep - DS

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Senior Manager
Joined: 14 Jul 2005
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10 Aug 2006, 14:02
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Can someone explain this one....
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Retired Moderator
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10 Aug 2006, 14:23

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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CEO
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Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008

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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
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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SVP
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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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Manager
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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.

Heman

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Manager
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12 Aug 2006, 06:38
can someone explain how to calculate LCM,GCM for fractions ?

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Senior Manager
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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.

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12 Aug 2006, 12:32
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