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A Prime number can only have adivisorof itself and 1.
Both 3 and 7 divide 21, so it cannot be a prime number.
I.e.: 21/3 = 7 and 21/7 = 3
A composite number has at least 1 divisor, and we already determined that both 3 and 7 are divisors, so:
21 is a composite number
21 is a composite number.
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Earn +20 ptsQ: Is 21 prime composite or neither?
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Is 21 a prime composite or neither?
Composite
What is neither a prime nor a composite number?
It is 1 that is neither a prime or a composite number The number 1 is neither prime nor composite.
What prime numbers 21?
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. 21 is composite.
What is ONE composite or prime OR NEITHER?
ANSWER: One is neither prime nor composite.
Is 1 a prime a composite number or neither?
1 and 0 are neither composite or prime numbers
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