2006-12-07 04:29:18 · 5 answers · asked by pamela j 1 in Science & Mathematics ➔ Mathematics
68 = 2x34 = 2x2x17
85 = 5x17
153 = 3x3x17
GCF is 17
2006-12-07 04:31:47 · answer #1 · answered by Jim Burnell 6 · 0⤊ 0⤋
17
2006-12-07 12:32:57 · answer #2 · answered by Boatman 3 · 0⤊ 0⤋
17
2006-12-07 12:32:49 · answer #3 · answered by Dupinder jeet kaur k 2 · 0⤊ 0⤋
finding the greatest common factor is to list the prime factors, then multiply the common prime factors.
Example:
Let's use the same numbers, 36 and 54 again to find their greatest common multiple.
The prime factorization of 36 is 2 x 2 x 3 x 3
The prime factorization of 54 is 2 x 3 x 3 x 3
Notice that the prime factorizations of 36 and 54 both have one 2 and two 3s in common. So, we simply multiply these common prime factors to find the greatest common factor. Like this...
2 x 3 x 3 = 18
2006-12-07 12:33:33 · answer #4 · answered by DanE 7 · 0⤊ 0⤋
68=17*2*2
85=17*5
153=17*3*3
GCF is 17
2006-12-07 12:32:53 · answer #5 · answered by raj 7 · 0⤊ 0⤋