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Source: — Data Sufficiency |
Junior | Next Rank: 30 Posts
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Re: LCM

by paradox » Wed Aug 01, 2007 9:55 pm
roopachet wrote:if i am not wrong LCM of two numbers for example 2 and 3 is nothing but 2 multiplied by 3 that is 6. similarly x/y multiplied by 1/3 = 6 so x=18 y you still do not get the answer and hence E the answer.
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Roopachet
I'm not sure that this explanation is correct. Here is my explanation (but I'm no expert :D ):

The LCD is 6, which means 6 is a multiple of y AND 3. Y could either be 2 or 6. Since there are two possible values for y, statement I is not sufficient to uniquely determine y.
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Re: LCM

by gabriel » Wed Aug 01, 2007 11:15 pm
roopachet wrote:if i am not wrong LCM of two numbers for example 2 and 3 is nothing but 2 multiplied by 3 that is 6. similarly x/y multiplied by 1/3 = 6 so x=18 y you still do not get the answer and hence E the answer.
Cheers
Roopachet
2 roopachet that soltion is wrong on many levels .. ur concept of LCM itself is wrong .. read this https://mathforum.org/library/drmath/set ... m_gcf.html ..

btw i agree with paradox's answer ..
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