2006-10-25 10:15:28 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
An example of sucessive division by prime numbers:
Given 18 and 42
18
/ \
2 9
. / \
.3 .3
42
/ \
2 21
. ./ \
. .3 7
These numbers share a 2 and a 3 or 6
2006-10-25 11:48:36 · answer #1 · answered by Anonymous · 0⤊ 0⤋
list the number from greatest to least, and then list each of the number's factors. Ex.
12 - (2, 3, 4, 6, 1, 12)
10 - (1, 2, 4, 5, 6, 8, 10)
The numbers 6, 2, 1 are the shared factors of these two numbers, and the number 6 is the greatest.
2006-10-25 17:21:08 · answer #2 · answered by Beth B 2 · 0⤊ 0⤋
divide th nombers with 2 divide again and again unti one or all of stop to be dividing with two .then divide the remainder numbers with 3.. then with 5 until the remainder stops dividing with any number the numbers with wich u r divinding the said number will be the common factors ..exp 4..and 6 common factor will be 2
2006-10-25 17:24:06 · answer #3 · answered by shamsayasmin 3 · 0⤊ 1⤋
use the prime numbers 2,3,5,7,11,13,17,19,etc. if its devisible by these numbers you found the least common factor and the greatest common is usually obvious
2006-10-25 17:17:23 · answer #4 · answered by KT 2 · 0⤊ 0⤋
anything multiplied by 2 like 2,4,6,8,10 mostly even numbers.
I'm in the top 10 7th grade Algebra class. Trust me
2006-10-25 17:16:55 · answer #5 · answered by korean_girl101 2 · 1⤊ 0⤋
Divide by that number.
2006-10-25 17:18:53 · answer #6 · answered by Pitambri 3 · 0⤊ 0⤋
look it up in your text book
2006-10-25 17:16:40 · answer #7 · answered by default 3 · 0⤊ 1⤋