# Help with LCM and GCD.

• October 22nd 2012, 05:43 AM
kohila
Help with LCM and GCD.
(Surprised) If a/b,b/c, then the GCD of a,b,c is.

• October 22nd 2012, 05:56 AM
Plato
Re: Help with LCM and GCD.
Quote:

Originally Posted by kohila
(Surprised) If a/b,b/c, then the GCD of a,b,c is.

Well it depends:
$\text{If }a=5,~b=5~\&~c=5\text{ then GCD}(a,b,c)=~?$

$\text{If }a=5,~b=5~\&~c=10\text{ then GCD}(a,b,c)=~?$

$\text{If }a=5,~b=10~\&~c=15\text{ then GCD}(a,b,c)=~?$

The point being the answer is $\min\{a,b,c\}$.
• October 22nd 2012, 06:22 AM
kohila
Re: Help with LCM and GCD.
But the answer is a, my teacher suggested... I want the explanation on it...