How many of the positive factors of 20 are not factors of 24 Choose the correct answer:
A) 2
B) 3
C) 4
D) 1
E) 5
factors of 20 - 1, 2, 4,5, 10, 20   factors of 24 -1, 2, 3, 4, 6, 8, 12 and 24   Comparing both, we have 3 factors of 20 which are not factors of 24- 5,10,20   Answer : 3
<result>B</result>
How many of the positive factors of 20 are not factors of 24