Yes, they are all composite.
Only 63. 0 and 1 are not composite numbers and are not prime numbers (even though 1 used to be). 19 is a prime number.
63
No, they are both composite.
61, 67, are prime numbers - 63 is not - 63 is a composite number.
Only 63 is a composite. 63 = 3 x 3 x 7 The other three numbers (13, 31, 61) are all prime numbers.
Between 60 and 70 the composite numbers are: 62, 63, 64, 65, 66, 68, 69. 60 and 70 are also composite.
The easiest way to tell if 63 ia a composite number is to determine if 3 will divide evenly into the digits when they are added together. 63 6 + 3 = 9. 9 is divisible by 3. 63 is a composite number. If you want to know what composite number will divide evenly into 63, you can list the factor pairs: 1 x 63 3 x 21 7 x 9 1, 3, and 7 are prime numbers. 9, 21, and 63 are the factors of 63 that are composite numbers.
63, 64
13 prime 63 composite 61 prime 31 prime Well the question should have been either, Which one of these numbers is not a composite number? Or, Which one of these numbers is not a prime number?
No because they are all composite numbers
No. 63 is a composite number with two unique prime factors. 63 = 3 * 3 * 7