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GMAT PREP - LCM


 
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raulverde
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PostPosted: Fri Sep 21, 2007 12:00 pm    Post subject: GMAT PREP - LCM Reply with quote
detailed explanation please. thanx in advance.
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kajcha
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PostPosted: Fri Sep 21, 2007 12:43 pm    Post subject: Reply with quote
Should be C

Stmt 1 - Nos can be 10 and 20 OR 20 and 30. Products are different NOT SUFF

Stmt 2 - LCM is 180 so product can be 180, 360 NOT SUFF

together we know that product of nos = GCF*LCM. So SUFF
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raulverde
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PostPosted: Fri Sep 21, 2007 1:06 pm    Post subject: Reply with quote
Kajcha,

product of nos = GCF*LCM.

Is this rule stated in the official guide ?
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camitava
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PostPosted: Sat Sep 22, 2007 2:15 am    Post subject: Reply with quote
Quote:

Kajcha,

product of nos = GCF*LCM.

Is this rule stated in the official guide ?


Hey raulverde - This is the rule of basic math. So u need not have to take care whather it is defined in official guide or not. But the stmt - product of two number = Their LCM * Their GCM - is a universal truth u can say! Wink Very Happy
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kajcha
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PostPosted: Sat Sep 22, 2007 3:47 am    Post subject: Reply with quote
I agree. This is numbers' properties.
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