if x is divisible by 4 then x/4 = y, where y is an integer. so it follows that y = x/(2*2) and therefore 2y = x /2. since y is an integer, so must 2y. since x/2 yields an integer (2y), x must be even.
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It is always divisible by two.
They are all divisible by 2 - when they are divided by 2 the answer will always be whole number, not a fraction or a decimal.
If a number is not divisible by two then it is not an even number.
The definition of an even number is a number that is divisible by 2. Thus ALL even numbers are evenly (sic) divisible by 2.
An "even" number is a number that is divisible by 2. Since 5 is not divisible by 2, it is an "odd" number.