gfc of 105, 168, 224
using prime factorization
plz help thx
2007-11-01 14:48:55 · 7 answers · asked by jacqueline m 1 in Science & Mathematics ➔ Mathematics
5,3,7
2,2,2,3,7
2,2,2,2,2,7
so its 7
2007-11-01 14:57:27 · answer #1 · answered by Anonymous · 3⤊ 0⤋
Using prime factorization:
105 = 3 x 5 x 7
168 = 2 x 2 x 2 x 3 x 7
224 = 2 x 2 x 2 x 2 x 2 x 7
Greatest common factor is 7
2007-11-01 14:56:50 · answer #2 · answered by achain 5 · 0⤊ 0⤋
105 = 3 x 5 x 7
168 = 2 x 2 x 2 x 3 x 7
224 = 2 x 2 x 2 x 2 x 2 x 7
so the greatest common factor is 7
2007-11-01 15:03:16 · answer #3 · answered by Anonymous · 0⤊ 0⤋
105 = 3 x 5 x 7
168 = 2 x 2 x 2 x 3 x 7
224 = 2 x 2 x 2 x 2 x 2 x 7
Greatest common factor is 7
2007-11-01 14:58:10 · answer #4 · answered by pepsi400dew 2 · 0⤊ 0⤋
start with the factorization of each of the three numbers:
105 = 105/3 = 35/5 = 7/7 = 1, so the factorization of 105 is 3*5*7
168= 2*2*2*3*7
224=2*2*2*2*2*7
Then look at the largest number that they have in common, which is 7.
2007-11-01 15:10:59 · answer #5 · answered by Anonymous · 0⤊ 0⤋
105 = 3*5*7
168 = 24*7 = 2³ * 3*7
224 = 32*7 = 2^5 * 7.
The GCF of these 3 numbers is 7.
2007-11-01 14:54:59 · answer #6 · answered by steiner1745 7 · 0⤊ 0⤋
[11]
105=3 x5 x7
168=2 x2 x2 x3 x7
224=2 x2 x2 x2 x2 x7
Therefore GCF is 7
2007-11-01 14:55:46 · answer #7 · answered by alpha 7 · 0⤊ 0⤋