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LCM

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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Source: — Quantitative Reasoning |
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LCM

by Kaurona » Tue Jun 24, 2008 8:59 pm
nevermind!! i had a friend just help me understand this!

finally! =) I can't believe it took me 2 hours to understand such a simple thing!
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Re: LCM

by lunarpower » Mon Jun 30, 2008 1:54 am
Kaurona wrote:nevermind!! i had a friend just help me understand this!

finally! =) I can't believe it took me 2 hours to understand such a simple thing!
i'm glad my telepathic skills worked this time; i've been working on them for a long time now.

while you're at it, here's an obscure but cool fact about lcm's and gcf's:
(lcm of x and y)(gcf of x and y) = (x)(y)
the probability that you'll actually get to use this fact on the exam is rather low, but, if you do get the chance to use it, you'll probably NAIL whatever problem you get to use it on.

do you know about gcf's? if not, you may as well learn about them as long as you're hitting lcm's.
Ron has been teaching various standardized tests for 20 years.

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