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GCF and LCM of multiple numbers

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by pavand » Thu Sep 22, 2011 5:42 am
1. Is it true that GCF(90,5,5,5) = GCF(90,5,5) = GCF(90,5) = 5?

2. Is it true that LCM(80,4,4,4) = LCM(80,4,4) = LCM(80,4) = 80?

3. What is the GCF(400,28,24). Answer = 4

4. What is the LCM(220,12,8). Answer = 1320

Please explain the steps to arrive at the above solutions
Last edited by pavand on Thu Sep 22, 2011 5:54 am, edited 1 time in total.
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by gmatclubmember » Thu Sep 22, 2011 5:51 am
pavand wrote:1. Is it true that GCF(90,5,5,5) = GCF(90,5,5) = GCF(90,5) = 5?

2. Is it true that LCM(80,4,4,4) = LCM(80,4,4) = LCM(80,4) = 80?

3. What is the GCF(400,28,24). Answer = 4

4. What is the LCM(220,12,8). Answer = 1320
You are right on all the 4 points.
What is your doubt exactly??

Cheers
Ami/-
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