The work that Yi did to find the greatest common factor of 42 and 63 is shown below.Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42Factors of 63: 1, 7, 9, 63The greatest common factor is 7.What is Yi’s error?
Answer
A
Yi did not list all the factors of 63.
B
Yi listed multiples for each number instead of factors.