Which Choice Is Not A Factor Of 20?

Which choice is not a factor of 20?

 

The Factors Of The Number 20, are +/-1, +/-2,+/-4,+/-5, +/-10, +/-20.

Any Numbers are not factors of 20, except the given factors above.

Basic Solution:

20÷1=20

20÷2=10

20÷4=5

20÷5=4

20÷10=2

20÷20=1

Therefore this are the Factors