The opposite of an even number is an odd number.
It would be 0, which is also its opposite.
If the last digit is an even number, the whole number is an even number.
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).
The opposite of an even number is an odd number.
if the opposite you are saying is the inverse, then the answer is no.
What exactly do you mean when you say "the opposite of a whole number" . . .
The answer depends on where opposite! Even if you could spell correctly, the answer would depend on whether you meant the additive opposite or the multiplicative opposite.
Whole number
An Integer
They are a pair of opposite whole numbers. Except in the case of 0 whose additive opposite is itself and which does not have a mulitplicative opposite.
No.
The square root of 16 is 4 which is a whole number.
technically speaking yes the opposite of 5 is -5
Well to correct your grammar first of all so I can read the question more understandably, what is a whole number and its opposite. A whole number is a number greater than 0. The opposite of a whole number is a negative number. A negative number is a number below 0, like you see on thermometers when its really cold sometimes. Here is a very important thing that you need to know. If you don't know this you will get it wrong on a test. 0 is not a negative number or whole number. It is just known as a place holder on the number line.
Look at the last digit. If it is even, the whole number is even. If it is odd, the whole number is odd.