a math problem, what is the greatest common factor of 93, 126, and 225
2006-09-08 00:13:43 · 10 answers · asked by grinny 1 in Education & Reference ➔ Homework Help
factors of 93 are 1, 3, 31, 93
factors of 126 are 1, 2, 3, 7, 126
factors of 225 are 1, 3, 5, 225
Therefore, the greatest common factor is 3
2006-09-08 00:23:58 · answer #1 · answered by Gaurab N 3 · 2⤊ 2⤋
first you got to know whats a GCF
a GCF is the largest factor that two or more numbers have in common.
now you analyse all the numbers you got to there factors which are :
93= ±1,±3,±31,and ±93
126 = ±1,± 2 ,±3,±3,±6 ,±7, ±9, ±18, ± 21, ±42 and ±126
225 =± 1,±3,±3,±5,±5,±9, ±15, ±25, ±45, ±75 and ±225
now as you may see all the common factors are ±1, ±3
which are -3,-1,1,3
you tack the l largest of the greatest among them which is 3
2006-09-08 09:31:45 · answer #2 · answered by Anonymous · 1⤊ 0⤋
3
2006-09-08 07:18:02 · answer #3 · answered by BalaSundaraRaman 3 · 0⤊ 0⤋
93 was the clue. it factors to 3 * 31. 31 is prime, and doesn't go into 126 or 225. So 3 is all you can get.
2006-09-08 07:23:52 · answer #4 · answered by Computer Guy 7 · 0⤊ 0⤋
Let's resolve each number into its prime factors.
93 = 3*31
126 = 2*3*3*7
225 = 3*3*5*5
As you can see, the greatest common factor of
all these numbers is 3.
2006-09-08 17:34:57 · answer #5 · answered by steiner1745 7 · 0⤊ 0⤋
The answer is easy, but greatest common factor is NOT what to call it. When I was at school it was called "highest common factor", but nobody uses that any more. Nowadays it should be called "greatest common divisor".
2006-09-08 09:44:34 · answer #6 · answered by bh8153 7 · 0⤊ 0⤋
93=3x31
126=3x3x2x7
225=3x3x5x5
so GCF is 3
2006-09-08 07:30:15 · answer #7 · answered by Kumar 5 · 0⤊ 0⤋
3!
2006-09-08 07:17:20 · answer #8 · answered by Omar 2 · 0⤊ 0⤋
as reasons stated by others, 3.
2006-09-08 08:13:42 · answer #9 · answered by vicks 2 · 0⤊ 0⤋
3.
Sorry to Gaurav.I clicked bad rating on his answer twice by mistake.
2006-09-08 07:40:20 · answer #10 · answered by Anonymous · 0⤊ 0⤋