An even integer
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Yes, if x is an integer divisible by 3, then x^2 is also divisible by 3. This is because for any integer x, x^2 will also be divisible by 3 if x is divisible by 3. This can be proven using the property that the square of any integer divisible by 3 will also be divisible by 3.
If an integer's square is divisible by four, then it is even.
a positive integer evenly divisible only by itself and one.
There are no integer palindromes between 1,000 and 9,000 that are divisible by 20.
Do the division! If you get an integer (i.e., no decimals), then it is divisible.