How many of the positive factors of 19 are not factors of 29?  Select:  A) 0  B) 1  C) 2  D) 3  E) 4
Factors of 19 - 1, 19   factors of 29- 1, 29   Comparing both, we have three factors of 19 which are not factors of 29- 19,   The answer is 1
<result>B</result>
How many of the positive factors of 19 are not factors of 29?