How many of the positive factors of 42 are not factors of 56? Select
A) 1 B) 2 C) 3 D) 4 E) 5
Factors of 42 - 1,2,3,6,7,14,42   factors of 56 - 1,2,4,7,8,14,28,56   Comparing both, we have three factors of 42 which are not factors of 56 - 3,6,42 .   The answer is 3. Pls check your options again - D $ E are same.   ANSWER:3
<result>C</result>
How many of the positive factors of 42 are not factors of 56?