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Earn +20 ptsQ: Which one is a composite number 3 7 19 21?
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Is 23 21 19 prime or composite?
19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.
Is the numbers 19 21 and 23 a composite number?
No, the numbers 19, 21, and 23 are not composite numbers. A composite number is a positive integer greater than 1 that has more than two distinct positive divisors. In the case of these numbers, 19 and 23 are prime numbers because they are only divisible by 1 and themselves, while 21 is a composite number because it has divisors other than 1 and itself (3 and 7).
Why is 21 a composite number?
21 is composite number because it has more than one number that goes into it
Is 19 21 or 23 composite?
21 is composite. 19 and 23 are prime.
What is the composite number for 21?
The only composite factor of 21 is 21.
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