21 is a composite number
A composite number is a number that has more than two factors. The factors of 21 are 1, 3, 7, and 21. Therefore, 21 is a composite number.
The next composite number after 20 is 21.
21 is composite.
21 is a composite number because it has more than two factors
The only composite factor of 21 is 21.
21 is a composite number
A composite number is a number that has more than two factors. The factors of 21 are 1, 3, 7, and 21. Therefore, 21 is a composite number.
The next composite number after 20 is 21.
21 is composite.
21 is composite number because it has more than one number that goes into it
21 and 28 are composite.
21 is the composite number because it's an odd number. 2 cannot be a composite number because it's even.
It is: 49-28 = 21
A composite number is a number that has more than two factors. The factors of 21 are 1, 3, 7, and 21. Therefore, 21 is a composite number.
Who says it is? 21 is a composite number!
number 21 is prime