5
Factor tree for 51: 51 * 1 or 17 * 3 Factor tree for 255: 255 * 1 or 51 * 5
The greatest common factor of 85 and 255 is 85.
1, 3, 5, 15, 17, 51, 85, 255
255 = 3 x 5 x 17
Because 51 is not a prime number and the prime factors of 255 are 3, 5 and 17
The largest number that goes into 150, 160, and 255 is 5.
The largest number that goes into 150, 160, and 255 is 5.
5, 0, 25, 1, 225,
It is 17 followed by 5 and 3
68 = 2 * 2 * 17 255 = 3 * 5 * 17 So it is 17.
No. 255 is an odd number.