If you mean a composite number that has 2 and 3 as factors of it, then it would be 6 or any other multiple of 6 .
If you mean a composite number that has 2 and 3 as digits in it , then it would be 234 or any other such numbers like 324,243,322,332,532,632,etc.
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The composite number out of this group of numbers would be 4.
The factors of 18 are: 1, 2, 3, 6, 9, and 18.Since there are other factors in addition to '1' and the number itself,the number is composite.18 is a composite number because it has more than 2 factors18 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.18 is not prime; it is composite. 18 = 2 * 3 * 3
Composite. 42 = 2 * 3 * 7
216 is not prime. 216 = 2 * 2 * 2 * 3 * 3 * 3
96 is a composite number because it has factors. Apart from 2 no even number is prime, they are all composite.