# Thread: Help with LCM and GCD.

1. ## Help with LCM and GCD.

If a/b,b/c, then the GCD of a,b,c is.

2. ## Re: Help with LCM and GCD.

Originally Posted by kohila
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 $\min\{a,b,c\}$.

3. ## Re: Help with LCM and GCD.

But the answer is a, my teacher suggested... I want the explanation on it...