The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
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A number that is already rounded.
It can be rounded from 0.7 to 1 as a whole number
Rounded to the nearest whole number, it is 10.
It is then 18 when rounded to the nearest whole number
It is 310 when rounded to the nearest whole number