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two numbers have LCM of 20 and HCF of 2 what are they

 Dec 6, 2014

Best Answer 

 #1
avatar+118723 
+5

two numbers have LCM of 20 and HCF of 2 what are they

 

Lets think about this

Since 2 is a common factor the numbers have to both be even and 

since 20 is a multiple of both, they both have to go into 20

which even number go into 20

2,4,10,20  that is it.  

20 and 2 work,

10 and 4 work

I don't think any other pair works for this.

 Dec 6, 2014
 #1
avatar+118723 
+5
Best Answer

two numbers have LCM of 20 and HCF of 2 what are they

 

Lets think about this

Since 2 is a common factor the numbers have to both be even and 

since 20 is a multiple of both, they both have to go into 20

which even number go into 20

2,4,10,20  that is it.  

20 and 2 work,

10 and 4 work

I don't think any other pair works for this.

Melody Dec 6, 2014

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