Show that it has more than two factors.
To prove whether a number is composite, factor it. A number having any factor besides 1 and itself is composite.
wowo is it a composite number dang how did I not see that...
the composite number is 23
20 is a composite number. Its factors are 1, 2, 4, 5, 10, and 20.
The next composite number after 20 is 21.
20 is a composite number because it has more than 2 factors
All even numbers greater than 2 are composite.
20 is a composite number because it has more than two factors
the composite number is 23
The only composite factor of 10 is 10. The composite factors of 20 are 4, 10, 20
20 is a composite number
20