Question

is 21 is factor of 0​

Answer 1

Answer:

Yes 21 is the factor of 0 because any no.

Multiply by 0 is always zero

Answer 2

Answer:

By the way, zero and one are considered neither prime nor composite numbers-they're in a class by themselves! You can write any composite number as a product of prime factors. This is called prime factorization. ... We find that 21 divided by 3 equals 7, and 7 is a prime number.

Step-by-step explanation:

in my opinion zero is a factor