Look for a table of prime numbers. All the odd numbers that are NOT on this list are composite numbers.
All square numbers greater than 1 are composite.
Since 20 is evenly divisible by 2, 4, 5, and 10, in addition to '1' and itself, I think it is a composite number.Since 20 is evenly divisible by 2, 4, 5, and 10, in addition to '1' and itself, I think it's probably composite.
20 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30,32,33,34,35
9 and 15 only.
The composite numbers that are between 1 and 20 inclusive are: 4 6 8 9 10 12 14 15 16 18 20 This is a total of eleven composite numbers equal to 20 and below.
The composite numbers from 1 to 23 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, and 22.
no, 20 is even; therefore it is a multiple of 2.
1, 2, 4, 5, 10, 20.
There are eleven of them including 20
The composite numbers that are between 1 and 20 inclusive are: 4 6 8 9 10 12 14 15 16 18 20 This is a total of eleven composite numbers equal to 20 and below.
The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.
Look for a table of prime numbers. All the odd numbers that are NOT on this list are composite numbers.
11 composite 8 prime 1 neither
All square numbers greater than 1 are composite.
Since 20 is evenly divisible by 2, 4, 5, and 10, in addition to '1' and itself, I think it is a composite number.Since 20 is evenly divisible by 2, 4, 5, and 10, in addition to '1' and itself, I think it's probably composite.