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Related Questions
Is there a prime number that is a multiple of 21?
No, it is not possible. Every multiple of 21 is a composite number. 21 is a composite number and its factors are 1, 3, 7 and 21(4 factors). Any multiple of 21 must have all the factors of 21. So, every multiple of 21 has at least 4 factors. And a prime number has only two factors so, any multiple of 21 can't be prime.
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 number can 3 and 21 go into?
21 and any multiple of 21.
What is the common multiple number of 9 and 21?
A common multiple of 9 and 21 is a number of the form 63*k where k is an integer.
What is number that is multiple of 3 also a multiple of 7?
21
Is 21 and 31 a prime number?
21 is composite number that is a multiple of 3. 31 is a prime number.
Which number is a common multiple of 21 and 27?
Any multiple of 189.
Which number is a common multiple of 21 and 39?
Any multiple of 273.
Which number is a multiple of 21?
21, 42, 63, 84 and so on.
What number is a factor of 21 but not a multiple of 7?
The factors of 21 are 1, 3, 7, 21. The factors which are not a multiple of 7 are 1 and 3.
What number is a factor of 70 is a prime number and 21 is a multiple?
7
Which number is a common multiple of 21 and 28?
84
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