what is the GCF for 20 and 31?
is it 1????
2007-06-20 11:45:25 · 7 answers · asked by marianne d 2 in Science & Mathematics ➔ Mathematics
GCF means greatest common factor. A factor of a number N is a number a that can a multiplicative part of it, so that a*b=N with some other integer b.
For example, 4 is a factor of 20 because 4*5=20.
31 is a prime number, meaning it has no factors except itself and 31. This means that the GCF of 20 and 31 is 1, because it is the only factor they can have in common (31 is not a factor of 20, of course).
2007-06-20 11:50:14 · answer #1 · answered by сhееsеr1 7 · 0⤊ 0⤋
to come across the GCF you may desire to element the pair of numbers and multiply at a similar time the climate that are recent in the two between the pair of numbers. 40 9: 7, 7 sixty 3: 3, 3, 7 they have one 7 in undemanding. GCF = 7 24: 2, 2, 2, 3 sixty 4: 2, 2, 2, 2, 2, 2 they have 2 2s in undemanding. GCF = 2 situations 2 situations 2 = 8
2016-11-07 01:52:41 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Yes. Since 31 is a prime number & 20 is not a multiple of 31, it is 1.
2007-06-20 11:52:38 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋
Exactly right. 31 is prime, so it shares no factors with 20 except for the trivial factor 1.
2007-06-20 11:48:24 · answer #4 · answered by TFV 5 · 0⤊ 0⤋
31 . . . G is for greatest
2007-06-20 11:57:27 · answer #5 · answered by CPUcate 6 · 0⤊ 1⤋
yea
2007-06-20 11:48:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
yes
31=1,31
20=1,2,4,5,10,20
2007-06-20 12:21:23 · answer #7 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋