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The composite number out of this group of numbers would be 4.
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.
A prime number is not divisible by any numbers except 1 and itself. A composite number is divisible by other numbers. 9 is divisible by 3, so it is a composite number.
I guess the expected answer is 12, the only composite number in the list. I guess the expected answer is 12, the only composite number in the list. I guess the expected answer is 12, the only composite number in the list. I guess the expected answer is 12, the only composite number in the list.
57 is a composite number with factors 3 and 19.