The opposite of an even number is an odd number.
Chat with our AI personalities
It's opposite is a negative. :P
If the last digit is an even number, the whole number is an even number.
It would be 0, which is also its opposite.
If the last number is odd or even then the whole number is odd or even, in this case the last number is 3 which is an odd number, therefore the whole number is odd.
The answer depends on the context for opposition: the additive inverses are whole numbers but the multiplicative inverses are not (except in the case of -1 and +1).