True.
Composite numbers are positive whole numbers that can be divided with no remainder by something other than 1 and themselves.
Even numbers can be divided without remainder by 2, so any even number greater than 2 can be divided without remainder by at least three numbers: 1, 2, and the number itself. That makes the number composite.
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All even numbers greater than two are composite.
Yes. They are all divisible by '2'
38 is a composite number because composite numbers are numbers that have more than 1 and themselves as factors. 1x38 is not the only solution, so it isn't prime. One solution for this could be 2x19
86 is composite, because it has factors other than 1 and itself. The factors of 86 are 1, 2, 43, and 86. All even numbers greater than 2 are composite.
No - although all positive even numbers other than 2 are composite, this does not mean that all composite numbers are even - the first odd composite number is 9, which is equal to 3 x 3.