30 / 2 = 15 15 / 3 = 5
the factor tree of 9 is 3 squared, or 3 x 3. 9 breaks down into 3 and 3.
30 / \ 2 15 / / \ 1*2 5*3 2*5*3
Factor tree for 51: 51 * 1 or 17 * 3 Factor tree for 255: 255 * 1 or 51 * 5
No. 6 is not a factor of 15. The greatest common factor of 15 and 18 is 3.
It is: 3 times 5 = 15
15 3, 5
The factor tree of 225 is: 15, 15 3, 5, 3, 5 225 75,3 25,3,3 5,5,3,3
3 and 5
165 15 11 3 516555,311,5,3
285 15 x 19 (3 x 5) x 19 The factor tree has reduced 285 to its prime factors: 3, 5, and 19.
30 / 2 = 15 15 / 3 = 5
45 3, 15 3, 3, 5 or 45 5, 9 5, 3, 3
Do a factor tree. 15 ^ 5 3 (3 & 5 are prime) 19 is a prime number. 15: 3 * 5 19: 19 ^^They have nothing in common. Therefore, the answer is 1.
30 / \ 2 15 / \ 3 5 / \ 5 1
1,350 / \ 135*10 / \ / \ 9*15 2*5 / \ / \ 3*3 3*5
225 15 15 3 5 3 5 The factors of 225 are 3, 3, 5, and 5. A common factor is one common to each of two or more numbers. There is not greatest common factor when only one number is given.