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Is 21 a factor of a prime number?
No. The only factors of a prime number are 1 and itself. The only way that 21 could be a factor of a prime number is if it were a prime number, but it is not because 21 is also divisible by 3 and 7.
Which number is a factor of 21 and also a prime number?
3 and 7
What is a prime number for 12 and 21?
3 is a prime factor of 12 and of 21.
What number is it has 90 as a factor thre number is prime 21 is the multiple of the number?
If 21 is a multiple of the number, the number cannot have 90 as a factor.
What is the composite number between 20 and 50 whose prime factor is 21?
21 is not a prime factor, it is 3 x 7
What number is a factor of 21 and a prime number?
21 = 3 x 7 both 3 and 7 are prime numbers
What prime number is a factor of 21?
3 and 7
What prime number is a factor of 12 and 21?
3
What number is a prime factor of both 12 and 21?
'3' 3 x 4 = 12 3 x 7 = 21 NB '7' is also a prime number.
What number is a factor of 70 is a prime number and 21 is a multiple?
7
What are the prime of factors of 21?
prime factor = prime number which can be divided into the given number with no remainder The prime factors of 21 are 3 and 7.
What is the factor tree of 21?
3x7=21 3 and 7 are prime numbers, so 3x7 is the factor tree of the number 21.
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