Posted by **jasmine20** on Monday, December 4, 2006 at 7:04pm.

Can someone check this for me :

Find the gcf for each of the following groups of numbers: 36,64, and 180

My answer: gcf=4

Find the lcm for each of the following groups of numbers which ever method you wish:8,15, and 20

My answer: Lcm=1

Find two factors of 15 with a difference of 2?

My answer: 3 and 5

Normally, we exclude 1 when listing lcm. In this case, it is wrong. The lcm is 120.

my question is are the other two answers correct or are they wrong as well.

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