There is no "common factor" of 350, to have a common factor you must have more than one number, so there is no common factor of 350.
83 is prime. No tree.
61 is already prime. It doesn't need a tree.
When the bottom branch consists entirely of prime numbers.
The purpose of a factor tree is to divide a number into prime factors. 1 is not a prime number.
350 175,2 35,5,2 7,5,5,2
350 10, 35 2, 5, 35 2, 5, 5, 7
Use a factor tree. 350 175,2 35,5,2 7,5,5,2
There is no "common factor" of 350, to have a common factor you must have more than one number, so there is no common factor of 350.
The greatest common factor of 250 and 350 is 50.
I don't know where you saw that. 7 is a factor of 350.
The greatest common factor of 150 and 350 is 50
IT IS PRIME there is no factor tree
Factor tree of 204
factor tree of 216
The Greatest Common Factor (GCF) of 155 and 350 is: 5
The factor tree of 50:5025,25,5,25025,25,5,2