105
35,3
7,5,3
105 35,3 7,5,3
105 35,3 7,5,3
105 35,3 7,5,3
it is ^ ^ 21 5 ^ 7 3
As a product of its prime factors: 3*5*7 = 105
We note that 105 ends in '5' , so it will divide by '5' Hence 5)105 = 21 7)21 = 3 3)3 = 1 NB We reduce the factoring division to '1'. The factor tree is 3,5,& 7.
It can be. 105 is a factor of 210.
The easiest way to figure this out is to get the factors of 8 and see if they are factors of 105. Factors of 8: 8, 4, 2, 1 Now check, 105/8 = 13.125 (not a factor) 105/4 = 26.25 (not a factor) 105/2 = 52.5 (not a factor) 105/1 = 105 (is a factor) So the common factor of 8 and 105 is 1.
1 and 105 are a factor pair of 105 since 1 x 105= 105 3 and 35 are a factor pair of 105 since 3 x 35= 105 5 and 21 are a factor pair of 105 since 5 x 21= 105 7 and 15 are a factor pair of 105 since 7 x 15= 105
106 53 2 is 53 prime? if so, there you go. if not, you continue.
The GCF is 105.
Since 21 is a factor of 105, it is automatically the GCF.