How do I figure out the GCF and the LCM of these three numbers 10-55 and 45

Answer 1

I pasted below an example that reiny (tutor here) did recently.

10 and 55 are done in this example. Follow what reiny did for 45.

EXAMPLE
10 = 2*5
75 = 3*5*5
55 = 5*11

The GCF is the largest number that divides into all three numbers,
in this case 5
the GCF ≤ the smallest of the numbers

The LCM is that number which contains all the factors that are found in all the numbers
in this case it is 2*3*5*5*11 = 1650
It is the smallest number that the given numbers divide INTO evenly
the LCD ≥ the largest of the given numbers.

for the LCD I usually write down the longest string of factors, then looking at the other group of factors, I include any others not yet included in my string.

Answer 2

I am looking for the GCF and LCM of the ages 50,55,10. Can you help me with that?